Rigid-flexible coupling high-precision focusing platform

Abstract

The utility model relates to the technical field of focusing platforms, in particular to a rigid-flexible coupling high-precision focusing platform. According to the technical scheme, the rigid-flexible coupling high-precision focusing platform comprises a base table and a rigid-flexible coupling table connected to one side of the base table in a sliding mode, focusing is completed between the base table and the rigid-flexible coupling table through meshing transmission of a rack and a gear, the rigid-flexible coupling table comprises a frame, and further comprises a flexible hinge and a workbench which are embedded in the frame, an adjusting shaft is rotationally connected into the workbench in a penetrating mode, and the gear is arranged on the side wall of the adjusting shaft in a sleeving mode. The rigid-flexible composite guide technology is adopted, the flexible hinge is installed between the guide rail and the gear rack mechanism, the influence of friction is isolated, elastic deformation of the gear rack is prevented, and accurate adjustment is completed.

Description

Technical Field

[0001] The present application relates to the technical field of focusing platforms, and in particular to a rigid-flexible coupling high-precision focusing platform. Background Art

[0002] Optical systems usually require a focusing device to achieve a clear image, especially high-power microscope magnifiers, which require higher focusing accuracy due to the small depth of field.

[0003] In the prior art, dovetail groove guide and gear rack mechanism are mainly used to achieve focal length adjustment. However, due to the large friction of the dovetail groove, when the adjustment amount is small, the dovetail groove cannot overcome the friction to produce movement, and the driving force causes the elastic deformation of the gear rack. When the hand is released, the elastic deformation rebounds, so that precise adjustment cannot be achieved. In view of this, the present application proposes a rigid-flexible coupling high-precision focusing platform. Utility Model Content

[0004] The purpose of this application is to point out the technical problem that precise adjustment cannot be achieved when the adjustment amount is small in the background technology, and to propose a rigid-flexible coupling high-precision focusing platform.

[0005] The technical solution of the present application includes a base and a rigid-flexible coupling platform slidably connected to one side thereof, wherein focusing is accomplished between the base and the rigid-flexible coupling platform through a rack and a gear meshing transmission, wherein the rigid-flexible coupling platform includes a frame, and also includes a flexible hinge and a workbench embedded in the frame, wherein an adjustment shaft is rotatably connected through the workbench, and the gear is sleeved on the side wall of the adjustment shaft.

[0006] Preferably, the workbench is connected to the frame via a plurality of flexible hinges.

[0007] Preferably, there are four groups of flexible hinges, and the directions of the four groups of flexible hinges are the same as the axial direction of the gear.

[0008] Preferably, the rigid-flexible coupling platform and the base platform are guided to slide via a guide member.

[0009] Preferably, the guide member comprises a dovetail groove formed on a side wall of the base, and a dovetail plate slidably connected to the dovetail groove is processed on the side wall of the rigid-flexible coupling platform.

[0010] Preferably, the guide member comprises a guide rail connected to the side wall of the base, and the side wall of the rigid-flexible coupling platform is processed with a guide block that slides with the guide rail.

[0011] Preferably, a coarse adjustment drive member is provided at one end of the adjustment shaft, and a fine adjustment drive member is provided at the other end of the adjustment shaft, the adjustment shaft is fixedly connected to the coarse adjustment drive member, and a fine adjustment drive mechanism that cooperates with the adjustment shaft for adjustment is provided inside the fine adjustment drive member.

[0012] Preferably, the fine-adjustment drive mechanism comprises a sun gear fixedly sleeved on the other end of the adjustment shaft, the inner ring of the fine-adjustment drive member is fixedly connected with a ring gear, and the ring gear and the sun gear are meshed and driven by planetary gears.

[0013] Preferably, a sleeve is connected through the workbench, the adjusting shaft passes through the sleeve and is rotatably connected to the sleeve, and the gear is fixedly sleeved on the side wall of the adjusting shaft and is located in the sleeve.

[0014] Compared with the prior art, this application has the following beneficial technical effects:

[0015] This application adopts rigid-flexible composite guide technology, and installs a flexible hinge between the guide rail and the gear rack mechanism to isolate the influence of friction, prevent elastic deformation of the gear rack, and complete precise adjustment;

[0016] By installing a coarse adjustment drive at one end of the adjustment shaft and a fine adjustment drive at the other end, and arranging a fine adjustment drive mechanism in the fine adjustment drive, coarse adjustment can be quickly achieved through the coarse adjustment drive, and fine adjustment can be completed through the fine adjustment drive. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereoscopic image of the rigid-flexible coupled high-precision focusing platform;

[0018] Figure 2 yes Figure 1 A cross-sectional view of

[0019] Figure 3 This is a schematic diagram of the sliding structure of the rigid-flexible coupling high-precision focusing platform guide rail

[0020] Figure 4 It is a structural schematic diagram of the fine-tuning drive mechanism in this application.

[0021] Reference numerals: 1, base; 2, rigid-flexible coupling platform; 201, frame; 202, flexible hinge; 203, workbench;

[0022] 4. Coarse adjustment of the driving parts; 5. Fine adjustment of the driving parts;

[0023] 6. Fine-tuning drive mechanism; 601. sun gear; 602. planetary gear; 603. ring gear.

[0024] 7. Guide member; 9. Rack; 10. Gear; 12. Adjusting shaft. DETAILED DESCRIPTION

[0025] The technical solution of the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the present application.

[0027] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0028] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] Example

[0031] like Figure 1-4 As shown, the rigid-flexible coupling high-precision focusing platform proposed in the present application includes a base 1 and a rigid-flexible coupling platform 2 slidably connected to one side thereof, wherein the rigid-flexible coupling platform 2 and the base 1 are guided to slide through a guide member 7. Figure 1 The guide member 7 includes a dovetail groove formed on the side wall of the base 1, and a dovetail plate slidably connected to the dovetail groove is processed on the side wall of the rigid-flexible coupling platform 2. Figure 4 The guide member 7 includes a guide rail connected to the side wall of the base 1, and the side wall of the rigid-flexible coupling platform 2 is processed with a guide block that slides with the guide rail, so that the rigid-flexible coupling platform 2 is guided and slidably connected to one side of the base 1. The base 1 and the rigid-flexible coupling platform 2 are meshed and driven by a rack 9 and a gear 10 to complete the focusing, and the gear 10 rolls along the direction of the rack 9.

[0032] The rigid-flexible coupling platform 2 includes a frame 201, and also includes a flexible hinge 202 and a workbench 203 embedded in the frame 201. An adjustment shaft is rotatably connected to the workbench 203, and the gear is sleeved on the side wall of the adjustment shaft. There are four groups of flexible hinges 202, and the directions of the four groups of flexible hinges 202 are the same as the axial direction of the gear 10. An adjustment shaft 12 is rotatably connected to the workbench 203. The two ends of the adjustment shaft 12 freely pass through the two ends of the rigid-flexible coupling platform 2. Both ends of the rigid-flexible coupling platform 2 are provided with openings for the adjustment shaft 12 to pass through. The gear 10 is sleeved on the side wall of the adjustment shaft 12. It is worth noting that a sleeve is fixedly connected to the workbench 203, and the adjustment shaft 12 passes through the sleeve and is rotatably connected to the sleeve. The gear 10 is fixedly sleeved on the side wall of the adjustment shaft 12 and is located in the sleeve. The side wall of the sleeve is provided with an opening so that the gear 10 and the rack 9 can be meshed.

[0033] Among them, a coarse adjustment drive member 4 is provided at one end of the adjustment shaft 12, and a fine adjustment drive member 5 is provided at the other end of the adjustment shaft 12. The adjustment shaft 12 is fixedly connected to the coarse adjustment drive member 4, and a fine adjustment drive mechanism 6 that cooperates with the adjustment shaft 12 is provided in the fine adjustment drive member 5. The fine adjustment drive mechanism 6 includes a sun gear 601 fixedly sleeved on the other end of the adjustment shaft 12, and the inner ring of the fine adjustment drive member 5 is fixedly connected to a ring gear 603. The ring gear 603 and the sun gear 601 are meshed and driven by a planetary gear 602. The side wall of the rigid-flexible coupling platform 2 is connected to a planetary gear support frame for mounting the planetary gear 602 (the mounting structure here is a prior art mounting structure, which will not be described in detail here). The sun gear 601 is driven by the planetary gear 602 to reduce the speed, and then the gear 10 and the rack 9 are driven by the adjustment shaft 12 to complete the precise adjustment.

[0034] The specific working principle is as follows: the rack is installed on the side wall of the base 1 along the direction of the guide member 7, and the gear is installed on the workbench 203 (specifically, a sleeve is passed through and fixedly connected in the workbench 203, the adjusting shaft 12 passes through the sleeve and is rotatably connected with the sleeve, and the gear 10 is fixedly sleeved on the side wall of the adjusting shaft 12 and is located in the sleeve). The rigid-flexible coupling platform is driven to move along the guide rail direction by rotating the adjusting shaft 12. During coarse adjustment, the coarse adjustment driving member 4 is rotated to directly drive the adjusting shaft 12 to rotate, so that the gear 10 and the rack 9 are meshed for transmission, thereby causing the rigid-flexible coupling platform 2 to move along the guide member 7 direction; during fine adjustment, the fine adjustment driving member 5 is rotated, firstly, the ring gear 603 is meshed with the planetary gear 602 for transmission, and then the planetary gear 602 is meshed with the sun gear 601 for transmission, driving the adjusting shaft 12 to rotate, so that the gear 10 and the rack 9 are meshed for transmission, thereby causing the rigid-flexible coupling platform 2 to move along the guide member 7 direction. At this time, the fine adjustment is completed by the deceleration meshing of the planetary gear 602. During rotation adjustment, the damping force of the adjustment shaft 12 is greater than the static friction force of the guide rail, and the adjustment can also be completed by motor drive. By installing the workbench 203 in the rigid-flexible coupling platform 2, the workbench 203 is connected to the rigid-flexible coupling platform 2 through a flexible hinge 202 to isolate the influence of friction, thereby solving the problem that the traditional optical focusing platform is affected by the friction of the guide rail and the focusing accuracy is limited. This application is mainly used for optical detection (such as microscopes) or manual micro-displacement platforms.

[0035] The above-mentioned specific embodiments are merely preferred embodiments of the present application. Based on the technical solutions of the present application and the relevant inspirations of the above-mentioned embodiments, those skilled in the art may make various alternative improvements and combinations to the above-mentioned specific embodiments. The above-mentioned specific embodiments are merely explanations of the present application, and they are not limitations of the present application.

Claims

1. Rigid-flexible coupling high-precision focusing platform, characterized by: The invention comprises a base and a rigid-flexible coupling platform slidably connected to one side thereof, wherein focusing is accomplished by meshing transmission of a rack and a gear between the base and the rigid-flexible coupling platform, the rigid-flexible coupling platform comprises a frame, and also comprises a flexible hinge and a workbench embedded in the frame, an adjusting shaft is rotatably connected through the workbench, and the gear is sleeved on the side wall of the adjusting shaft.

2. The rigid-flexible coupling high-precision focusing platform according to claim 1, characterized in that: The workbench is connected to the frame via a plurality of flexible hinges.

3. The rigid-flexible coupling high-precision focusing platform according to claim 2, characterized in that: There are four groups of flexible hinges, and the directions of the four groups of flexible hinges are the same as the axial direction of the gear.

4. The rigid-flexible coupling high-precision focusing platform according to claim 3, characterized in that: The rigid-flexible coupling platform and the base platform are guided and slidable via a guide member.

5. The rigid-flexible coupling high-precision focusing platform according to claim 4, characterized in that: The guide member comprises a dovetail groove formed on the side wall of the base, and the side wall of the rigid-flexible coupling platform is processed with a dovetail plate slidably connected with the dovetail groove.

6. The rigid-flexible coupling high-precision focusing platform according to claim 4, characterized in that: The guide member comprises a guide rail connected to the side wall of the base, and the side wall of the rigid-flexible coupling platform is processed with a guide block which slides with the guide rail.

7. The rigid-flexible coupling high-precision focusing platform according to claim 6, characterized in that: A coarse adjustment drive member is disposed at one end of the adjustment shaft, and a fine adjustment drive member is disposed at the other end of the adjustment shaft. The adjustment shaft is fixedly connected to the coarse adjustment drive member, and a fine adjustment drive mechanism that cooperates with the adjustment shaft for adjustment is disposed in the fine adjustment drive member.

8. The rigid-flexible coupling high-precision focusing platform according to claim 7, characterized in that: The fine adjustment drive mechanism comprises a sun gear fixedly sleeved on the other end of the adjustment shaft, the inner ring of the fine adjustment drive is fixedly connected with a ring gear, and the ring gear and the sun gear are meshed and driven by planetary gears.

9. The rigid-flexible coupling high-precision focusing platform according to claim 2, characterized in that: A sleeve is connected through the workbench, the adjusting shaft passes through the sleeve and is rotatably connected with the sleeve, and the gear is fixedly sleeved on the side wall of the adjusting shaft and is located in the sleeve.

Images