Self-adaptive centering clamping device

Abstract

The utility model discloses a self-adaptive centering clamping device, which relates to the technical field of clamping mechanisms and comprises a driving module, a first rotary clamping module, a telescopic module and a second rotary clamping module, the first rotary clamping module is connected and assembled with the second rotary clamping module through the telescopic module, and the second rotary clamping module is connected with the second rotary clamping module through the telescopic module. The driving module is arranged at the side end of the first rotary clamping module and used for driving the first rotary clamping module to conduct the clamping function, telescopic adjustment can be conducted according to products of different specifications and types, the applicability is higher, the clamping process is more convenient and rapid, stable and reliable, operation is convenient, self-centering clamping of the two ends of a clamped object can be achieved, and the coaxiality is high.

Description

Technical Field

[0001] This utility model relates to the technical field of clamping mechanisms, and more specifically, to an adaptive centering clamping device. Background Technology

[0002] The function of a workpiece clamping device is to ensure that the workpiece does not rotate or move during the manufacturing, assembly, and inspection processes, thereby ensuring machining accuracy and safety. Currently, most clamping devices on the market can only clamp workpieces of a single type and specification. For example, existing clamping devices for motors and air springs mostly only clamp and fix one model, resulting in a limited range of applications. They cannot clamp multiple specifications and models of motors and air springs, and their operation is cumbersome and inefficient.

[0003] Based on this, we provide an adaptive centering clamping device. Utility Model Content

[0004] To address the problems mentioned in the background art, this utility model provides an adaptive centering clamping device.

[0005] The adaptive centering clamping device provided by this utility model adopts the following technical solution:

[0006] An adaptive centering clamping device includes a drive module, a first rotary clamping module, a telescopic module, and a second rotary clamping module. The first rotary clamping module is connected to the second rotary clamping module via the telescopic module. The drive module is located on the side of the first rotary clamping module and is used to drive the first rotary clamping module to perform a clamping action. The drive module includes a servo motor, a motor gear, a lower base, an arc-shaped guide rail, and a pinion gear set. The servo motor is mounted on the lower base with screws, and the motor gear is connected to the upper motor shaft of the servo motor via a key connection. The set screw completes the axial fixation. The arc-shaped guide rail is fixedly assembled to the side of the lower base by screws. The small gear set is rotatably connected to the side of the lower base by bearings and is arranged in a circle. The rotary clamping module includes internal and external gears, four roller blocks, a rack support seat, a clamping block and an upper fixed seat. The four roller blocks are assembled to the internal and external gears by screws. The roller blocks are slidably connected to the arc-shaped guide rail. The rack support seat has six guide grooves arranged in a circle and is slidably connected to the clamping block. The upper fixed seat is assembled to the rack support seat by screws.

[0007] Preferably, the external and internal teeth of the internal and external gears are not on the same horizontal plane, wherein the external teeth mesh with the pinion gear set and the internal teeth mesh with the motor gear.

[0008] Preferably, the clamping block includes a linear slide rail, a rack, a force sensor, a force sensor mounting base, a connecting column, and a fixing block; the linear slide rail is fixedly connected to the rack by screws, and the rack is assembled by a threaded connection formed by a section of shaft with external threads at its end and a section of internal threads on the force sensor mounting base; the force sensor mounting base has a square groove for the force sensor cable to exit; the force sensor is fixed in the force sensor mounting base by the rack and the connecting column; the connecting column is axially and circumferentially fixed by two rectangular keys on its exterior and a flange at one end and a rectangular groove in the force sensor mounting base; the fixing block is connected to the connecting column by its inner hole and rectangular groove, and is axially fixed by a set screw.

[0009] Preferably, the pinion gear set also meshes with the rack of the clamping block.

[0010] Preferably, the telescopic module includes a telescopic sleeve A and a telescopic sleeve B. The telescopic sleeves A and B are semi-elliptical in shape and have L-shaped structures on both sides for fixing them. Each of the telescopic sleeves A and B has three grooves of the same size. The telescopic sleeve B also has three grooves on its inner side for placing nuts and preventing them from rotating. The telescopic module adjusts the telescopic distance by moving the telescopic sleeves A and B relative to each other. After adjustment, the outer screw is tightened to complete the fixation.

[0011] Preferably, the second rotary clamping module includes a base, a clamping block, a cylindrical pin, a rotary disk, a cover plate, and a rotating screw. The base is connected and fixed to the cover plate by the screw. Both the base and the cover plate have four guide grooves. The rotary disk has four arc-shaped grooves. The clamping block is slidably connected to the guide grooves on the base and the cover plate and the arc-shaped grooves on the rotary disk by the cylindrical pin. The rotary disk is threadedly connected to the rotating screw by a handle with a threaded hole on it.

[0012] Preferably, the PLC drives the servo motor to rotate the motor gear, which in turn drives the inner and outer gears to rotate around the arc-shaped guide rail via the roller block. This drives the small gear set that meshes with the outer teeth of the inner and outer gears to rotate around several shafts on the lower base, thereby driving the six racks to move linearly and adjust the inner diameter of the rotary clamping module.

[0013] Preferably, the rotary clamping module two rotates the handle on the rotary disk, causing the rotary disk to rotate around the center of the rotary clamping module two. This causes the clamping block and the cylindrical pin to slide on the guide grooves opened in the base and the cover plate through the arc groove on the rotary disk, thereby adjusting the inner diameter of the rotary clamping module two. After the adjustment is completed, the rotary clamping module two is locked by tightening the rotating screw.

[0014] In summary, this utility model has the following beneficial technical effects:

[0015] The overall clamping process is divided into three steps. The first step is to adjust the telescopic distance. After the device is fixed, the object to be clamped is placed from above the telescopic module. The telescopic module is adjusted according to the length of the object to be clamped. After adjustment, the three screws on the telescopic module are tightened. The latter two steps can be performed simultaneously or in no particular order. Through this structural design, the telescopic adjustment can be made for products of different specifications and types, making it more applicable, more convenient and faster to clamp, stable and reliable, and easy to operate. It can achieve self-centering clamping of both ends of the object to be clamped with high coaxiality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an adaptive centering clamping device according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the drive module in an embodiment of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the rotary clamping module one in this embodiment of the present invention;

[0019] Figure 4 This is a cross-sectional structural schematic diagram of the clamping block in an embodiment of this utility model;

[0020] Figure 5 This is an exploded view of the clamping block in an embodiment of this utility model;

[0021] Figure 6 This is a structural schematic diagram of the telescopic module in an embodiment of this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the rotary clamping module two in this embodiment of the present invention;

[0023] Figure 8 This is an exploded view of the second rotary clamping module in this embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of an adaptive centering clamping device clamping a motor according to an embodiment of this utility model;

[0025] Figure 10 This is a schematic diagram of an adaptive centering clamping device clamping an air spring according to an embodiment of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Drive module; 1-1. Servo motor; 1-2. Motor gear; 1-3. Lower base; 1-4. Arc-shaped guide rail; 1-5. Small gear set;

[0028] 2. Rotary clamping module one; 2-1. Internal and external gears; 2-2. Roller block; 2-3. Rack support seat; 2-4. Clamping block; 2-41. Linear slide rail; 2-42. Rack; 2-43. Force sensor; 2-44. Force sensor mounting base; 2-45. Connecting column; 2-46. Fixing block; 2-5. Fixing base;

[0029] 3. Telescopic module; 3-1. Telescopic sleeve A; 3-2. Telescopic sleeve B;

[0030] 4. Rotary clamping module two; 4-1. Base; 4-2. Clamping block; 4-3. Cylindrical pin; 4-4. Rotary disc; 4-5. Cover plate; 4-6. Rotating screw. Detailed Implementation

[0031] The following is in conjunction with the appendix Figures 1 to 10 The present invention will be described in further detail below.

[0032] It should be noted that the accompanying drawings are schematic and not to scale. For clarity and convenience, the relative dimensions and proportions of the parts shown are exaggerated or reduced in size; all dimensions are merely illustrative and not limiting. Furthermore, the same reference numerals are used for the same structures, elements, or fittings appearing in more than two drawings to indicate similar features.

[0033] Example 1

[0034] This utility model discloses an adaptive centering clamping device. (Refer to...) Figures 1 to 9An adaptive centering clamping device includes a drive module 1, a rotary clamping module 2, a telescopic module 3, and a rotary clamping module 4. The rotary clamping module 2 is connected to the rotary clamping module 4 via the telescopic module 3. The drive module 1 is located at the side of the rotary clamping module 2 and drives it to perform the clamping action. The lower base 1-3 of the drive module 1 is fixedly connected to the rack support 2-3 of the rotary clamping module 2 via screws. The rotary clamping module 2 is connected to the telescopic sleeve A3-1 of the telescopic module 3 via a threaded hole on the upper fixed base 2-5. The rotary clamping module 4 is connected to the telescopic sleeve B3-2 of the telescopic module 3 via a threaded hole on the base 4-1. The rotary clamping modules 2 and 4 are concentric via the telescopic module 3. The drive module 1 includes a servo motor 1-1 and a motor gear 1-2. The lower base 1-3, the arc-shaped guide rail 1-4, and the pinion gear set 1-5 are all included. The servo motor 1-1 is mounted on the lower base 1-3 with screws. The motor gear 1-2 is connected to the motor shaft of the servo motor 1-1 via a key and is axially fixed by a set screw. The arc-shaped guide rail 1-4 is fixedly mounted on the side of the lower base 1-3 with screws. The pinion gear set 1-5 is rotatably connected to the side of the lower base 1-3 via bearings and is arranged in a circular pattern. The rotary clamping module 2 includes internal and external gears 2-1, four roller blocks 2-2, a rack support 2-3, a clamping block 2-4, and an upper fixed seat 2-5. The four roller blocks 2-2 are mounted on the internal and external gears 2-1 with screws. The roller blocks 2-2 are slidably connected to the arc-shaped guide rail 1-4. The rack support 2-3 has six guide grooves arranged in a circular pattern and is slidably connected to the clamping block 2-4. The upper fixed seat 2-5 is mounted on the rack support 2-3 with screws.

[0035] The adaptive centering clamping device provided in this embodiment of the utility model, such as Figure 1 and Figure 9 As shown, the overall clamping is divided into three steps. The first step is to adjust the telescopic distance. After the device is fixed, the object to be clamped is placed from above the telescopic module 3. The telescopic module 3 is adjusted according to the length of the object to be clamped. After the adjustment is completed, the three screws on the telescopic module 3 are tightened. The last two steps are not sequential and can be performed simultaneously.

[0036] Specifically, the external and internal teeth of the internal and external gears 2-1 are not on the same horizontal plane, and there is a certain height difference between them to avoid interference when assembling with other modules. The external teeth mesh with the pinion gear set 1-5, and the internal teeth mesh with the motor gear 1-2.

[0037] Specifically, the clamping block 2-4 includes a linear slide rail 2-41, a rack 2-42, a force sensor 2-43, a force sensor mounting base 2-44, a connecting post 2-45, and a fixing block 2-46. The linear slide rail 2-41 is fixedly connected to the rack 2-42 by screws. The rack 2-42 is assembled by a threaded connection formed by a section of shaft with external threads at its end and a section of internal threads on the force sensor mounting base 2-44. The force sensor mounting base 2-44 has a square groove for the force sensor 2-43 to exit. The force sensor 2-43 is fixed in the force sensor mounting base 2-44 by the rack 2-42 and the connecting post 2-45. The connecting post 2-45 is fixed axially and circumferentially by two rectangular keys on its outside and a flange at one end to the rectangular groove in the force sensor mounting base 2-44. The fixing block 2-46 is connected to the connecting post 2-45 through its inner hole and rectangular groove, and is axially fixed by a set screw.

[0038] Specifically, the pinion gear 1-5 also meshes with the rack 2-42 of the clamping block 2-4.

[0039] For the clamping of the rotary clamping module 2, such as Figure 2 and Figure 3 As shown, the PLC drives the servo motor 1-1 to rotate, which in turn drives the motor gear 1-2 to rotate. This drives the internal and external gears 2-1, which mesh with the motor gear 1-2, to rotate around the arc-shaped guide rail 1-4 via the roller block 2-2. This, in turn, drives the pinion gear set 1-5, which meshes with the external teeth of the internal and external gears 2-1, to rotate around several shafts on the lower base 1-3. This, in turn, drives the rack 2-42, which meshes with the pinion gear set 1-5, to move linearly towards the center of the rotary clamping module 2, adjusting the inner diameter of the rotary clamping module 2. The PLC makes real-time judgments based on the force value fed back by the force sensor 2-43 in the clamping block 2-4. When the force value fed back by the force sensor 2-43 reaches the preset clamping force value, it indicates that the object being clamped has been clamped, and the PLC controls the servo motor 1-1 to stop.

[0040] Specifically, the telescopic module 3 includes telescopic sleeve A3-1 and telescopic sleeve B3-2. Telescopic sleeve A3-1 and telescopic sleeve B3-2 are semi-elliptical in shape and have L-shaped structures on both sides for fixing telescopic sleeve A3-1 and telescopic sleeve B3-2. Each telescopic sleeve A3-1 and telescopic sleeve B3-2 has three grooves of the same size. Telescopic sleeve B3-2 also has three grooves on its inner side for placing nuts and preventing nuts from rotating. The telescopic module 3 adjusts the telescopic distance by moving telescopic sleeve A3-1 and telescopic sleeve B3-2 relative to each other. After adjustment, tighten the outer screws to complete the fixation.

[0041] Example 2

[0042] This embodiment is a further optimization based on the above embodiments. The parts that are the same as those in the foregoing technical solutions will not be repeated here. Figure 7 and Figure 8 As shown, to further better realize this utility model, the following configuration is specifically adopted: In this embodiment, the rotary clamping module 4 includes a base 4-1, a clamping block 4-2, a cylindrical pin 4-3, a rotary disk 4-4, a cover plate 4-5, and a rotating screw 4-6. The base 4-1 is connected and fixed to the cover plate 4-5 by screws. Four guide grooves are provided on both the base 4-1 and the cover plate 4-5. Four arc-shaped grooves are provided on the rotary disk 4-4. The clamping block 4-2 is slidably connected to the guide grooves on the base 4-1 and the cover plate 4-5 and the arc-shaped grooves on the rotary disk 4-4 through the cylindrical pin 4-3. The rotary disk 4-4 is threadedly connected to the rotating screw 4-6 through a handle with a threaded hole on it.

[0043] For the clamping of the rotary clamping module 24, such as Figure 7 and Figure 8 As shown, by holding the handle on the rotary table 4-4 and turning it to one side, the rotary motion of the rotary table 4-4 is converted into linear sliding of the clamping block 4-2 and the cylindrical pin 4-3 on the guide grooves opened on the base 4-1 and the cover plate 4-5 through the arc groove. This adjusts the inner diameter of the rotary clamping module 2 4. After the object being clamped is clamped and fixed, the rotating screw 4-6 is tightened to lock the rotary clamping module 2 4.

[0044] Similarly, to remove the clamped object, simply drive the servo motor 1-1 to reverse via the PLC, loosen the rotating screw 4-6, and then hold the handle on the rotary table 4-4 and rotate it to the other side.

[0045] Specifically, the PLC drives the servo motor 1-1 to rotate the motor gear 1-2, which in turn drives the inner and outer gears 2-1 to rotate around the arc-shaped guide rail 1-4 via the roller block 2-2. This drives the small gear group 1-5, which meshes with the outer teeth of the inner and outer gears 2-1, to rotate around several shafts on the lower base 1-3, thereby driving the six racks 2-42 to move linearly and adjust the inner diameter of the rotary clamping module 1-2.

[0046] Specifically, the rotary clamping module 2 4 rotates the handle on the rotary disk 4-4, causing the rotary disk 4-4 to rotate around the center of the rotary clamping module 2 4. This causes the clamping block 4-2 and the cylindrical pin 4-3 to slide on the guide grooves opened in the base 4-1 and the cover plate 4-5 through the arc groove on the rotary disk 4-4, thereby adjusting the inner diameter of the rotary clamping module 2 4. After the adjustment is completed, the rotary clamping module 2 4 is locked by tightening the rotating screw 4-6.

[0047] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0048] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified.

[0049] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0051] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0052] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0053] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adaptive centering clamping device, characterized in that, include: The drive module (1), the first rotary clamping module (2), the telescopic module (3) and the second rotary clamping module (4) are connected and assembled with the second rotary clamping module (4) through the telescopic module (3). The drive module (1) is located on the side of the first rotary clamping module (2) and is used to drive the first rotary clamping module (2) to perform clamping function. The drive module (1) includes a servo motor (1-1), a motor gear (1-2), a lower base (1-3), an arc-shaped guide rail (1-4), and a pinion gear set (1-5). The servo motor (1-1) is mounted on the lower base (1-3) with screws. The motor gear (1-2) is connected to the motor shaft of the servo motor (1-1) by a key and is axially fixed by a set screw. The arc-shaped guide rail (1-4) is fixedly mounted on the side of the lower base (1-3) with screws. The pinion gear set (1-5) is rotatably connected to the side of the lower base (1-3) by bearings and is arranged in a circular pattern. The rotary clamping module 1 (2) includes an internal and external gear (2-1), four roller blocks (2-2), a rack support (2-3), a clamping block (2-4), and an upper fixed seat (2-5). The four roller blocks (2-2) are assembled on the internal and external gear (2-1) by screws. The roller blocks (2-2) are slidably connected to the arc-shaped guide rail (1-4). The rack support (2-3) has six guide grooves arranged in a circle and is slidably connected to the clamping block (2-4). The upper fixed seat (2-5) is assembled on the rack support (2-3) by screws.

2. The adaptive centering clamping device according to claim 1, characterized in that: The external and internal teeth of the internal and external gears (2-1) are not on the same horizontal plane. The external teeth mesh with the pinion gear set (1-5), and the internal teeth mesh with the motor gear (1-2).

3. The adaptive centering clamping device according to claim 1, characterized in that: The clamping block (2-4) includes a linear slide rail (2-41), a rack (2-42), a force sensor (2-43), a force sensor mounting base (2-44), a connecting post (2-45), and a fixing block (2-46); The linear slide rail (2-41) is fixedly connected to the rack (2-42) by screws. The rack (2-42) is assembled by connecting the externally threaded shaft at its end with the internally threaded section of the force sensor mounting base (2-44). The force sensor mounting base (2-44) is provided with a square groove for the force sensor (2-43) wire to exit; The force sensor (2-43) is fixed in the force sensor mounting base (2-44) by the rack (2-42) and the connecting post (2-45); The connecting column (2-45) is fixed axially and circumferentially by two rectangular keys on the outside of the column and a flange at one end, and a rectangular groove in the force sensor fixing seat (2-44). The fixing block (2-46) is connected to the connecting column (2-45) through its inner hole and rectangular groove, and is axially fixed by a set screw.

4. The adaptive centering clamping device according to claim 3, characterized in that: The pinion gear set (1-5) also meshes with the rack (2-42) of the clamping block (2-4).

5. The adaptive centering clamping device according to claim 1, characterized in that: The telescopic module (3) includes a telescopic sleeve A (3-1) and a telescopic sleeve B (3-2). The telescopic sleeve A (3-1) and the telescopic sleeve B (3-2) are semi-elliptical and have L-shaped structures on both sides for fixing the telescopic sleeve A (3-1) and the telescopic sleeve B (3-2). Both the telescopic sleeve A (3-1) and the telescopic sleeve B (3-2) have three slots of the same size. The telescopic sleeve B (3-2) also has three grooves on its inner side for placing the nut and preventing the nut from rotating; The telescopic module (3) adjusts the telescopic distance by moving the telescopic sleeve A (3-1) and the telescopic sleeve B (3-2) relative to each other. After adjustment, the outer screw is tightened to complete the fixation.

6. The adaptive centering clamping device according to claim 1, characterized in that: The rotary clamping module 2 (4) includes a base (4-1), a clamping block (4-2), a cylindrical pin (4-3), a rotary disk (4-4), a cover plate (4-5), and a rotating screw (4-6). The base (4-1) is connected and fixed to the cover plate (4-5) by screws. The base (4-1) and the cover plate (4-5) are each provided with four guide grooves; The rotary table (4-4) has four arc-shaped grooves. The clamping block (4-2) is slidably connected to the guide groove on the base (4-1) and cover plate (4-5) and the arc groove on the rotary table (4-4) via a cylindrical pin (4-3); The rotary table (4-4) is threadedly connected to the rotating screw (4-6) via a handle with a threaded hole on it.

7. The adaptive centering clamping device according to claim 3 or 5, characterized in that: The PLC drives the servo motor (1-1) to drive the motor gear (1-2) to rotate, which in turn drives the inner and outer gears (2-1) to rotate around the arc-shaped guide rail (1-4) via the roller block (2-2). This drives the small gear group (1-5) that meshes with the outer teeth of the inner and outer gears (2-1) to rotate around several shafts on the lower base (1-3), which in turn drives the six racks (2-42) to move linearly, adjusting the inner diameter of the rotary clamping module (2).

8. The adaptive centering clamping device according to claim 6, characterized in that: The rotary clamping module 2 (4) rotates the handle on the rotary disk (4-4) to drive the rotary disk (4-4) to rotate around the center of the rotary clamping module 2 (4). This causes the clamping block (4-2) and the cylindrical pin (4-3) to slide on the guide grooves opened in the base (4-1) and the cover plate (4-5) through the arc groove on the rotary disk (4-4) to adjust the inner diameter of the rotary clamping module 2 (4). After the adjustment is completed, the rotary clamping module 2 (4) is locked by tightening the rotating screw (4-6).

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