Two-degree-of-freedom position adjusting mechanism

Abstract

The utility model discloses a two-degree-of-freedom position adjusting mechanism which comprises an installation support, an X-axis position adjusting mechanism is installed on the installation support, and a Y-axis position adjusting mechanism is installed at the moving execution end of the X-axis position adjusting mechanism. The X-axis driving assembly and the Y-axis driving assembly both adopt a matched transmission mechanism of a stepping motor and a synchronous belt wheel, the cost is low, the response speed and the control precision of position adjustment can be guaranteed, the position adjustment range is large, the large-stroke position adjustment requirement can be met, and the working efficiency is improved. And the split type arrangement structure can reduce the occupied space of the position adjusting mechanism, an additional linear module installation rack is not needed, the overall weight is light, and the applicability of the position adjusting mechanism in different application scenes is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of position adjustment mechanisms, in particular to a two-degree-of-freedom position adjustment mechanism. Background Art

[0002] With the development of automation technology, higher requirements are also put forward for the position drive device of the actuator. Among them, the plane position adjustment device can realize the position transfer of the actuator at any coordinate point in the plane through the movement of two degrees of freedom in the X and Y directions. It is a widely used position adjustment mechanism. For example, in an automatic water filling station, the water filling actuator is installed on the position adjustment mechanism, and the position adjustment mechanism moves to the predetermined position to perform the water filling action.

[0003] Traditional planar position adjustment mechanisms mostly use multiple linear modules to achieve multi-axis position adjustment, while linear modules are mostly driven directly by screw structures or cylinders. The former has a slow driving speed, and the latter is not suitable for position transfer with a large stroke. At the same time, due to the size of each linear module itself, the overall size of the position adjustment mechanism is difficult to control, resulting in a large overall weight of the device, and some linear modules are more expensive, which is highly restricted in application scenarios. Summary of the invention

[0004] In view of the deficiencies of the prior art, the utility model provides a two-degree-of-freedom position adjustment mechanism which can realize the position transfer of an external actuator in a plane, has high precision and occupies a small volume.

[0005] In order to achieve the above objectives, the utility model is implemented through the following technical solutions.

[0006] The present application provides a two-degree-of-freedom position adjustment mechanism, comprising a mounting bracket, an X-axis position adjustment mechanism disposed on the mounting bracket, and a Y-axis position adjustment mechanism disposed on a moving execution end of the X-axis position adjustment mechanism;

[0007] The mounting bracket is fixedly arranged on the external mounting base, the X-axis position adjustment mechanism includes two first slide rails fixedly arranged on the mounting bracket and parallel to each other, two first slide tables slidably arranged on the two first slide rails, and an X-axis drive assembly, and the Y-axis position adjustment mechanism includes a second slide rail fixedly arranged between the two first slide tables, a second slide table slidably arranged on the second slide rail, and a Y-axis drive assembly;

[0008] Wherein, the X-axis driving assembly can drive the first slide table and the Y-axis position adjustment mechanism to move synchronously along the axial direction of the first slide rail;

[0009] The second slide is used to install an external actuator, and the Y-axis driving assembly can drive the second slide and the external actuator to move synchronously along the axial direction of the second slide rail.

[0010] The utility model has at least the following beneficial effects:

[0011] The X-axis position adjustment mechanism drives the first slide to slide on the first slide rail through the X-axis drive component, thereby driving the Y-axis position adjustment mechanism installed on the first slide to move synchronously. At the same time, the Y-axis position adjustment mechanism can drive the second slide to slide on the second slide rail through the Y-axis drive component, so that the external actuator on the second slide can achieve compound position adjustment in two degrees of freedom under the action of the X-axis drive component and the Y-axis drive component. Its split layout structure can reduce the space occupied by the position adjustment mechanism, there is no additional linear module installation frame, the overall weight is light, and the applicability of the position adjustment mechanism in different application scenarios is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural schematic diagram of a second degree of freedom position adjustment mechanism according to an embodiment of the present application;

[0013] Figure 2 This is an enlarged schematic diagram of the structure of the "first synchronization wheel 213" part of the second degree of freedom position adjustment mechanism of the embodiment of the present application;

[0014] Figure 3 It is a schematic diagram of the structure enlargement of the "first idler wheel 216" part in the second degree of freedom position adjustment mechanism of the embodiment of the present application;

[0015] Figure 4 This is a structural schematic diagram of a second degree of freedom position adjustment mechanism according to an embodiment of the present application;

[0016] Figure 5 This is a structural schematic diagram of a second degree of freedom position adjustment mechanism according to an embodiment of the present application;

[0017] Figure 6 It is a schematic diagram of the structure enlargement of the "first tensioning support 281" part of the second degree of freedom position adjustment mechanism of the embodiment of the present application;

[0018] Figure 7 It is an enlarged schematic diagram of the structure of the "second tensioning support 381" part in the second degree of freedom position adjustment mechanism of the embodiment of the present application.

[0019] Reference numerals

[0020] Mounting bracket 100, first mounting plate 110, second mounting plate 120, X-axis position adjustment mechanism 200, first stepper motor 211, first motor bracket 212, first synchronous wheel 213, first synchronous belt 214, mounting seat 215, first idler wheel 216, first bearing frame 217, first connecting frame 221, first drag chain 222, second connecting frame 223, first limit plate 224, first slide rail 230, first slide table 240, first linear bearing 250, first pressure plate 261, first clamping plate 262, first guide shaft support 271, first cushion block 272, first tensioning support 281, first Tightening bolt 282, first adjusting groove 283, first fixing bolt 284, Y-axis position adjustment mechanism 300, second slide rail 310, second slide table 320, second guide shaft support 331, second cushion block 332, second stepping motor 341, second synchronous belt 342, second motor support 343, second synchronous wheel 344, second bearing frame 345, second idler wheel 346, second drag chain 351, second limit plate 352, second linear bearing 360, second pressure plate 371, second clamping plate 372, second tensioning support 381, second tensioning bolt 382, ​​second adjusting groove 383, second fixing bolt 384. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0022] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0023] The two-degree-of-freedom position adjustment mechanism provided in the embodiment of the present application is described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0024] like Figures 1 to 7As shown, an embodiment of the present application provides a two-degree-of-freedom position adjustment mechanism, including a mounting bracket 100, an X-axis position adjustment mechanism 200 is mounted on the mounting bracket 100, and a Y-axis position adjustment mechanism 300 is mounted on the moving execution end of the X-axis position adjustment mechanism 200.

[0025] The mounting bracket 100 is fixedly mounted on an external mounting base (not shown in the drawings, it is the external mounting part of the position adjustment mechanism), the X-axis position adjustment mechanism 200 includes two first slide rails 230 fixedly mounted on the mounting bracket 100 and parallel to each other, two first slide tables 240 respectively slidably mounted on the two first slide rails 230, and an X-axis drive assembly for driving the first slide tables 240 to slide on the first slide rails 230, and the Y-axis position adjustment mechanism 300 includes a second slide rail 310 fixedly mounted between the two first slide tables 240, a second slide table 320 slidably mounted on the second slide rail 310, and a Y-axis drive assembly for driving the second slide table 320 to slide on the second slide rail 310.

[0026] Among them, when the X-axis driving component drives the first slide 240 to slide on the first slide rail 230, since the second slide rail 310 of the Y-axis position adjustment mechanism 300 is fixedly set on the first slide 240, the first slide 240 can drive the second slide rail 310, the second slide 320 and the external actuator installed on the second slide rail 310 (not shown in the figure, which is the external working execution part of the position adjustment mechanism) to move synchronously along the axial direction of the first slide rail 230 when moving. When the Y-axis driving component drives the second slide 320 to slide on the second slide rail 310, the external actuator installed on the second slide rail 310 can move synchronously along the axial direction of the second slide rail 310. Through the X-axis position adjustment mechanism 200 and the Y-axis position adjustment mechanism 300, the displacement of the external actuator in two degrees of freedom can be compounded, so that the external actuator can be transferred to any coordinate point in the plane, and its split arrangement structure can reduce the space occupied by the position adjustment mechanism, without an additional linear module installation frame, and the overall weight is light, which further improves the applicability of the position adjustment mechanism in different application scenarios.

[0027] It is understandable that the first slide rail 230 can not only guide the movement of the first slide 240, but also support the first slide 240 and the Y-axis position adjustment mechanism 300. Similarly, the second slide rail 310 can not only guide the movement of the second slide 320, but also support the second slide 320 and the external actuator on the second slide 320.

[0028] In a preferred embodiment, Figures 1 to 5As shown, the X-axis drive assembly includes a first motor bracket 212 and a first bearing frame 217 respectively fixedly connected to the external mounting base, a first stepper motor 211 is fixedly provided on the first motor bracket 212, a first synchronous wheel 213 is fixedly provided on the power output end of the first stepper motor 211, a first idler wheel 216 is rotatably provided on the first bearing frame 217, and a first synchronous belt 214 fixedly connected to one of the first slides 240 is wound around the first synchronous wheel 213 and the first idler wheel 216.

[0029] It is understandable that when the first stepper motor 211 drives the first synchronous wheel 213 to rotate, the first synchronous belt 214 rotates on the first synchronous wheel 213 and the first idler wheel 216 , thereby driving the first slide 240 to slide on the first slide rail 230 .

[0030] It is understandable that the structural form of the X-axis drive assembly is not limited to the above-mentioned one. For example, the power output end of the first stepper motor 211 can be fixedly set as a first synchronous gear, the first idle gear is rotatably set on the first bearing frame 217, and the first synchronous gear and the first idle gear are wound with a first synchronous toothed chain fixedly connected to one of the first slides 240. After replacing the pulley structure coupled to the first stepper motor 211 with a toothed chain structure, the first slide 240 and the Y-axis position adjustment mechanism 300 can also be driven by the first stepper motor 211 to move synchronously along the axial direction of the first slide rail 230. Other synchronous movement structures are not described in detail here, as long as the first stepper motor 211 can be driven and the first slide 240 and the Y-axis position adjustment mechanism 300 can move synchronously along the axial direction of the first slide rail 230.

[0031] In a preferred embodiment, Figures 1 to 5 As shown, the Y-axis driving assembly includes a second motor bracket 343 fixedly connected to one of the first slides 240 and a second bearing frame 345 fixedly connected to the other first slide 240, a second stepper motor 341 is fixedly provided on the second motor bracket 343, a second synchronous wheel 344 is fixedly provided on the power output end of the second stepper motor 341, a second idle wheel 346 is rotatably provided on the second bearing frame 345, and a second synchronous belt 342 fixedly connected to the second slide 320 is wound around the second synchronous wheel 344 and the second idle wheel 346.

[0032] It is understandable that when the second stepper motor 341 drives the second synchronous wheel 344 to rotate, the second synchronous belt 342 rotates on the second synchronous wheel 344 and the second idler wheel 346 , thereby driving the second slide 320 to slide on the second slide rail 310 .

[0033] It is understandable that the structural form of the Y-axis drive component is not limited to the above-mentioned one. For example, the power output end of the second stepper motor 341 can be fixedly set as a second synchronous gear, and the second idle gear is rotatably set on the second bearing frame 345. The second synchronous gear and the second idle gear are wound with a second synchronous toothed chain fixedly connected to the second slide 320. After replacing the pulley structure coupled to the second stepper motor 341 with a toothed chain structure, the second stepper motor 341 can also drive the second slide 320 and the external actuator to move synchronously along the axial direction of the second slide rail 310. Other synchronous movement structures are not described here in detail, as long as the second stepper motor 341 can be driven and executes the axial synchronous movement of the second slide 320 and the external actuator along the second slide rail 310.

[0034] In an embodiment of the present application, a two-degree-of-freedom position adjustment mechanism as described above is adopted, and the X-axial position adjustment mechanism 200 drives the first slide 240 to slide on the first slide rail 230 through the X-axial drive component, thereby driving the Y-axial position adjustment mechanism 300 installed on the first slide 240 to move synchronously, and at the same time, the Y-axial position adjustment mechanism 300 can drive the second slide 320 to slide on the second slide rail 310 through the Y-axial drive component, so that the second slide 320 can realize a composite position adjustment in two degrees of freedom under the action of the X-axial drive component and the Y-axial drive component. On the other hand, the X-axial drive component and the Y-axial drive component both adopt a transmission mechanism of a stepping motor and a synchronous pulley, which has a low cost and can not only ensure the response speed and control accuracy of the position adjustment, but also have a large position adjustment range and can meet the position adjustment requirements of a large stroke.

[0035] In a preferred embodiment, Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the mounting bracket 100 includes a first mounting plate 110 and a second mounting plate 120 which are fixedly connected to the external mounting base and are parallel to each other.

[0036] One end of the two first slide rails 230 is fixedly disposed on the first mounting plate 110 , and the other end is fixedly disposed on the second mounting plate 120 .

[0037] In a preferred embodiment, Figure 1 , Figure 4 , Figure 5As shown, both ends of the first slide rail 230 pass through the first mounting plate 110 and the second mounting plate 120 respectively, and first guide shaft supports 271 are fixedly provided on the first mounting plate 110 and the second mounting plate 120 at corresponding positions about the ends of the two first slide rails 230 respectively, and the first guide shaft supports 271 are fixedly connected to the corresponding positions 210, thereby realizing the fixed installation of the first slide rail 230 on the first mounting plate 110 and the second mounting plate 120.

[0038] Since the two first slide rails 230 are arranged in parallel, and the first mounting plate 110 and the second mounting plate 120 are arranged in parallel, the mounting bracket 100 and the two first slide rails 230 form a rectangular frame structure.

[0039] In a preferred embodiment, Figure 1 , Figure 4 , Figure 5 As shown, one end of the first guide shaft support 271 is mounted on the mounting bracket 100 by means of screws, and the other end is fixedly provided with a first cushion block 272 capable of abutting against the first slide 240 .

[0040] It can be understood that the first cushion block 272 can provide mechanical limitation for the sliding of the first slide 240 , and the first cushion block 272 can provide collision buffering for the first slide 240 , thereby improving the overall stability of the device.

[0041] In a preferred embodiment, the first cushion block 272 is specifically configured as a polyurethane cushion block.

[0042] In a preferred embodiment, Figures 1 to 5 As shown, the X-axis position adjustment mechanism 200 further includes a first drag chain 222 in a bent shape, one end of the first drag chain 222 is fixedly connected to the first slide 240 , and the other end is fixedly connected to the first mounting plate 110 or the second mounting plate 120 .

[0043] In an embodiment of the present application, the above-mentioned two-degree-of-freedom position adjustment mechanism is adopted. When the first slide 240 slides on the first slide rail 230, the first drag chain 222 can change its shape as the first slide 240 moves, thereby ensuring that the cables and pipes passing through it will not be damaged by bending.

[0044] In a preferred embodiment, Figures 1 to 5 As shown, a first connecting frame 221 is fixedly provided on the first mounting plate 110 , a second connecting frame 223 is fixedly provided on the first slide 240 , and one end of the first drag chain 222 is fixedly connected to the first connecting frame 221 , and the other end is fixedly connected to the second connecting frame 223 .

[0045] In a preferred embodiment, Figures 1 to 5As shown, a first limiting plate 224 for guiding and limiting the first drag chain 222 is fixedly provided on the first slide 240 .

[0046] It is understandable that when the position adjustment mechanism is arranged vertically, the first drag chain 222 is prone to deformation and sag under the action of gravity. At this time, more space needs to be reserved to avoid it. In order to reduce the height of the position adjustment mechanism, the first drag chain 222 is set to be arranged horizontally. At this time, the first limiting plate 224 can resist and limit the outer side surface of the bent part of the first drag chain 222, so that when the first drag chain 222 follows the movement and change shape of the first slide 240, the deformation of the first drag chain 222 is limited to ensure the working stability of the first drag chain 222.

[0047] In a preferred embodiment, Figures 1 to 5 As shown, a through hole is formed through the first slide 240 , and a first linear bearing 250 is fixedly disposed in the through hole.

[0048] The first slide platform 240 is slidably disposed on the first slide rail 230 via a first linear bearing 250 .

[0049] In a preferred embodiment, Figures 1 to 5 As shown, the X-axis position adjustment mechanism 200 further includes a first connecting assembly disposed between the first slide 240 and the first synchronous belt 214 .

[0050] The first connecting assembly includes a first pressing plate 261 fixedly disposed on the first slide 240 and capable of abutting against one side of the first synchronous belt 214 , and a first clamping plate 262 fixedly connected to the first pressing plate 261 and capable of meshing with the other side of the first synchronous belt 214 .

[0051] It can be understood that since the first clamping plate 262 is engaged with the first synchronous belt 214, and the first pressure plate 261 presses the first synchronous belt 214 toward the side close to the first clamping plate 262, the first clamping plate 262 and the first synchronous belt 214 are limited in the axial direction of the first slide rail 230, so that when the first synchronous belt 214 moves, it can drive the first connecting component to move synchronously, thereby realizing the driving of the first slide rail 230.

[0052] In a preferred embodiment, Figure 1 , Figures 3 to 6 As shown, the X-axis position adjustment mechanism 200 further includes a first tensioning mechanism for adjusting the tension of the first synchronous belt 214 .

[0053] In a preferred embodiment, Figure 3 , Figure 6As shown, the first tensioning mechanism includes a mounting seat 215 fixedly connected to the external mounting base, a first tensioning support 281 is fixedly provided on the mounting seat 215, and a first tensioning bolt 282 threadedly connected to the first bearing frame 217 is rotatably provided on the first tensioning support 281.

[0054] A first adjusting groove 283 is formed through the first bearing frame 217 . A first fixing bolt 284 which is threadedly connected to the mounting seat 215 is slidably disposed in the first adjusting groove 283 .

[0055] The central axis of the first tensioning bolt 282 and the length direction of the first adjustment slot 283 are parallel to the central axis of the first slide rail 230 .

[0056] It can be understood that when the first synchronous belt 214 is tensioned and adjusted by the first tensioning mechanism, the first fixing bolt 284 is first rotated to release its fixation on the first bearing frame 217. At this time, rotating the first tensioning bolt 282 can drive the first bearing frame 217 to move axially along the first slide rail 230, thereby adjusting the distance between the first idler wheel 216 and the first synchronous wheel 213, and then adjusting the tensioning force of the first synchronous belt 214. During this process, the first fixing bolt 284 slides in the first adjustment groove 283. When the tensioning force of the first synchronous belt 214 is adjusted, the relative position between the first bearing frame 217 and the mounting seat 215 can be fixed by rotating the first fixing bolt 284 again.

[0057] It is understandable that the structural setting of the first tensioning mechanism is not limited to the above-mentioned one. For example, an elastic element can also be arranged between the first tensioning support 281 and the first bearing frame 217, and the automatic tensioning adjustment of the first synchronous belt 214 can be achieved through the elastic force of the elastic element. As long as the tensioning force of the first synchronous belt 214 can meet the transmission requirements, it will not be elaborated here.

[0058] In a preferred embodiment, Figure 1 , Figure 4 , Figure 5 As shown, two second slide rails 310 are fixedly provided between the two first slide platforms 240 and are parallel to each other.

[0059] The second slide platform 320 is slidably connected to the two second slide rails 310 respectively.

[0060] In a preferred embodiment, Figure 1 , Figure 4 , Figure 5 As shown, second guide shaft supports 331 are fixedly provided at corresponding positions of the ends of the two second slide rails 310 on the two first slides 240 , and the second guide shaft supports 331 are fixedly connected to the second slide rails 310 at corresponding positions, thereby realizing fixed installation of the second slide rails 310 on the two first slides 240 .

[0061] Since the two second slide rails 310 are arranged in parallel, they form a rectangular frame structure with the two first slide platforms 240 .

[0062] In a preferred embodiment, Figure 1 , Figure 4 , Figure 5 As shown, one end of the second guide shaft support 331 is mounted on the first slide 240 by means of screws, and the other end is fixedly provided with a second cushion block 332 capable of abutting against the second slide 320 .

[0063] It can be understood that the second cushion block 332 can provide mechanical limitation for the sliding of the second slide 320 , and the second cushion block 332 can provide collision buffering for the second slide 320 , thereby improving the overall stability of the device.

[0064] In a preferred embodiment, the second cushion block 332 is specifically configured as a polyurethane cushion block.

[0065] In a preferred embodiment, Figures 1 to 5 As shown, the Y-axis position adjustment mechanism 300 further includes a bent second drag chain 351 , one end of which is fixedly connected to the second slide 320 , and the other end of which is fixedly connected to one of the first slides 240 .

[0066] In an embodiment of the present application, the above-mentioned two-degree-of-freedom position adjustment mechanism is adopted. When the second slide 320 slides on the second slide rail 310, the second drag chain 351 can change its shape as the second slide 320 moves, thereby ensuring that the cables and pipes passing through it will not be damaged by bending.

[0067] In a preferred embodiment, Figures 1 to 5 As shown, 353 is fixedly provided on the second slide 320 , 354 is fixedly provided on the first slide 240 , and one end of the second drag chain 351 is fixedly connected to 353 , and the other end is fixedly connected to 354 .

[0068] In a preferred embodiment, Figures 1 to 5 As shown, a second limiting plate 352 for guiding and limiting the second drag chain 351 is fixedly provided on the second slide 320 .

[0069] It can be understood that the second drag chain 351 is set to be arranged horizontally to reduce the height of the position adjustment mechanism. At this time, 252 can interfere with and limit the outer side surface of the bent part of the second drag chain 351, so as to limit the deformation of the second drag chain 351 when the second drag chain 351 follows the movement and change shape of the second slide 320, thereby ensuring the working stability of the second drag chain 351.

[0070] In a preferred embodiment, Figures 1 to 5 As shown, through holes are formed on the second slide table 320 at positions corresponding to the two second slide rails 310 , and second linear bearings 360 slidably connected to the second slide rails 310 at corresponding positions are fixed in the through holes.

[0071] In a preferred embodiment, Figures 1 to 5 As shown, the Y-axis position adjustment mechanism 300 further includes a second connecting assembly disposed between the second slide 320 and the second synchronous belt 342 .

[0072] The second connecting assembly includes a second pressing plate 371 fixedly disposed on the second slide 320 and capable of abutting against one side of the second synchronous belt 342 , and a second clamping plate 372 fixedly connected to the second pressing plate 371 and capable of meshing with the other side of the second synchronous belt 342 .

[0073] It can be understood that since the second clamping plate 372 is engaged with the second synchronous belt 342, and the second pressure plate 371 presses the second synchronous belt 342 toward the side close to the second clamping plate 372, the second clamping plate 372 and the second synchronous belt 342 are limited in the axial direction of the second slide rail 310, so that when the second synchronous belt 342 moves, it can drive the second connecting component to move synchronously, thereby realizing the driving of the second slide 320.

[0074] In a preferred embodiment, Figure 1 , Figure 4 , Figure 5 , Figure 7 As shown, the Y-axis position adjustment mechanism 300 also includes a second tensioning mechanism for adjusting the tension of the second synchronous belt 342 .

[0075] In a preferred embodiment, Figure 7 As shown, the second tensioning mechanism includes a second tensioning support 381 fixedly connected to the first slide 240 , and a second tensioning bolt 382 threadedly connected to the second bearing frame 345 is rotatably provided on the second tensioning support 381 .

[0076] A second adjusting groove 383 is formed through the second bearing frame 345 . A second fixing bolt 384 which is threadedly connected to the first slide table 240 is slidably disposed in the second adjusting groove 383 .

[0077] The central axis of the second tensioning bolt 382 and the length direction of the second adjustment slot 383 are parallel to the central axis of the second slide rail 310 .

[0078] It can be understood that when the second synchronous belt 342 is tensioned and adjusted by the second tensioning mechanism, the second fixing bolt 384 is first rotated to release the fixation on the second bearing frame 345. At this time, rotating the second tensioning bolt 382 can drive the second bearing frame 345 to move axially along the second slide rail 310, thereby adjusting the distance between the second idler wheel 346 and the second synchronous wheel 344, and then adjusting the tensioning force of the second synchronous belt 342. During this process, the second fixing bolt 384 slides in the second adjustment groove 383. When the tensioning force of the second synchronous belt 342 is adjusted, the relative position between the second bearing frame 345 and the first slide 240 can be fixed by rotating the second fixing bolt 384 again.

[0079] It is understandable that, like the first tensioning mechanism, the structural setting of the second tensioning mechanism is not limited to the above-mentioned one, as long as it can ensure that the tensioning force of the second synchronous belt 342 meets the transmission requirements, which will not be elaborated here.

[0080] In a preferred embodiment, the first slide rail 230 and / or the second slide rail 310 is configured as a hollow optical axis made of 45# steel plated with hard Cr.

[0081] In a preferred embodiment, it also includes a first sensing unit arranged at a corresponding position of the first slide rail 230 and used to mark the origin position of the first slide table 240, and / or a second sensing unit arranged at a corresponding position of the second slide rail 310 and used to mark the origin position of the second slide table 320.

[0082] In a preferred embodiment, the first sensing unit and / or the second sensing unit is specifically configured as a matching component of a limit switch and a baffle.

[0083] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0084] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A two-degree-of-freedom position adjustment mechanism, characterized in that: It includes a mounting bracket, an X-axis position adjustment mechanism arranged on the mounting bracket, and a Y-axis position adjustment mechanism arranged on the moving execution end of the X-axis position adjustment mechanism; The mounting bracket is fixedly arranged on the external mounting base, the X-axis position adjustment mechanism includes two first slide rails fixedly arranged on the mounting bracket and parallel to each other, two first slide tables slidably arranged on the two first slide rails, and an X-axis drive assembly, and the Y-axis position adjustment mechanism includes a second slide rail fixedly arranged between the two first slide tables, a second slide table slidably arranged on the second slide rail, and a Y-axis drive assembly; Wherein, the X-axis driving assembly can drive the first slide table and the Y-axis position adjustment mechanism to move synchronously along the axial direction of the first slide rail; The second slide is used to install an external actuator, and the Y-axis driving assembly can drive the second slide and the external actuator to move synchronously along the axial direction of the second slide rail.

2. A two-degree-of-freedom position adjustment mechanism according to claim 1, characterized in that: The X-axis drive assembly comprises a first stepper motor fixedly connected to the external mounting base, a first synchronous wheel is fixedly provided on the power output end of the first stepper motor, a first idler wheel is rotatably provided on the external mounting base, and a first synchronous belt fixedly connected to one of the first slides is wound around the first synchronous wheel and the first idler wheel; And / or the Y-axis drive assembly includes a second stepper motor fixedly connected to one of the first slides and a second idler wheel rotatably arranged on the other first slide, a second synchronous wheel is fixedly provided on the power output end of the second stepper motor, and a second synchronous belt fixedly connected to the second slide is wound around the second synchronous wheel and the second idler wheel.

3. A two-degree-of-freedom position adjustment mechanism according to claim 2, characterized in that: The X-axis position adjustment mechanism also includes a first pressing plate fixedly arranged on the first slide and capable of abutting against one side of the belt surface of the first synchronous belt, and a first clamping plate fixedly connected to the first pressing plate and capable of meshing with the other side of the belt surface of the first synchronous belt; And / or the Y-axis position adjustment mechanism also includes a second pressure plate fixedly arranged on the second slide and capable of abutting against one side of the second synchronous belt, and a second clamping plate fixedly connected to the second pressure plate and capable of meshing with the other side of the second synchronous belt.

4. A two-degree-of-freedom position adjustment mechanism according to claim 2, characterized in that: The X-axis position adjustment mechanism also includes a first tensioning mechanism for adjusting the tension of the first synchronous belt; And / or the Y-axis position adjustment mechanism also includes a second tensioning mechanism for adjusting the tension of the second synchronous belt.

5. A two-degree-of-freedom position adjustment mechanism according to claim 4, characterized in that: The first tensioning mechanism comprises a first bearing frame and a mounting seat fixedly connected to the external mounting base, a first tensioning support is fixedly provided on the mounting seat, and a first tensioning bolt threadedly connected to the first bearing frame is rotatably provided on the first tensioning support; A first adjusting groove is formed through the first bearing frame, and a first fixing bolt threadedly connected to the mounting seat is slidably disposed in the first adjusting groove; Wherein, the first idler wheel is rotatably arranged on the first bearing frame, and the central axis of the first tensioning bolt and the length direction of the first adjusting groove are both parallel to the central axis of the first slide rail.

6. A two-degree-of-freedom position adjustment mechanism according to claim 4, characterized in that: The second tensioning mechanism comprises a second bearing frame and a second tensioning support fixedly connected to the first slide, and the second tensioning support is rotatably provided with a second tensioning bolt threadedly connected to the second bearing frame; A second adjusting groove is formed through the second bearing frame, and a second fixing bolt threadedly connected to the first slide table is slidably disposed in the second adjusting groove; The second idler wheel is rotatably arranged on the second bearing frame, and the central axis of the second tensioning bolt and the length direction of the second adjustment groove are both parallel to the central axis of the second slide rail.

7. A two-degree-of-freedom position adjustment mechanism according to claim 1, characterized in that: The X-axis position adjustment mechanism further includes a first drag chain in a bent shape, one end of the first drag chain is fixedly connected to the first slide table, and the other end of the first drag chain is fixedly connected to the mounting bracket; And / or the Y-axis position adjustment mechanism further includes a second drag chain in a bent shape, one end of the second drag chain is fixedly connected to the second slide, and the other end of the second drag chain is fixedly connected to one of the first slides.

8. A two-degree-of-freedom position adjustment mechanism according to claim 7, characterized in that: The first slide is fixedly provided with a first limit plate capable of guiding and limiting the first drag chain.

9. A two-degree-of-freedom position adjustment mechanism according to claim 7, characterized in that: A second limiting plate capable of guiding and limiting the second drag chain is fixedly provided on the second slide.

10. The two-degree-of-freedom position adjustment mechanism according to claim 1, characterized in that: Both ends of the first slide rail are respectively fixedly connected to the mounting bracket via a first guide shaft support, and a first cushion block capable of abutting against the first slide table is fixedly provided on the first guide shaft support; And / or both ends of the second slide rail are respectively fixedly connected to the two first slides via second guide shaft supports, and a second cushion block capable of abutting against the second slide is fixedly provided on the second guide shaft support.

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