Kinematic positioning interface structure with locking function

Abstract

This invention discloses a kinematic positioning interface structure with locking function, belonging to the field of mechanical positioning technology. The invention includes a base and a separating component. The base and the separating component project onto a horizontal plane to form a virtual circle. Multiple connecting holes are evenly distributed on the virtual circle, penetrating the separating component and extending towards the base. Positioning and locking components are installed within the connecting holes for positioning and locking the base and the separating component. This invention integrates locking and positioning in one location without reducing the positioning accuracy of the separating component, resulting in high integration, strong applicability, and convenient and efficient operation.

Description

Technical Field

[0001] This invention relates to the field of mechanical positioning technology, and in particular to a kinematic positioning interface structure with locking function. Background Technology

[0002] As one of the future development trends for large-aperture telescopes, mosaic telescopes have significant application value and scientific significance. Compared with traditional single-mirror telescopes, mosaic telescopes can achieve larger aperture mirrors, providing higher resolution and wider observation capabilities. The design of the mosaic primary mirror is the core of the mosaic telescope; it consists of multiple sub-mirrors, each an independent optical element. However, sub-mirror replacement is an unavoidable process in mosaic telescopes. Whether for repair, maintenance, or upgrades, sub-mirrors may need to be replaced. In this context, the design of the kinematic positioning interface becomes particularly important. The kinematic positioning interface refers to the interface connecting the sub-mirrors and the mosaic primary mirror. It provides a precise positioning and alignment mechanism, allowing the sub-mirrors to be accurately and stably installed on the mosaic primary mirror, thereby ensuring the telescope's observation accuracy.

[0003] For sub-mirror replacement, the design requirements of the kinematic positioning interface are crucial. First, it needs high-precision positioning capabilities to ensure the sub-mirror's position and orientation match the original configuration. This guarantees that the overall optical performance of the spliced ​​telescope remains unaffected. Second, the kinematic positioning interface needs stable mechanical properties to withstand the weight of the sub-mirror and various mechanical stresses. Furthermore, the interface's durability and reliability must be considered to ensure it does not loosen or fail during long-term use.

[0004] When designing kinematic positioning interfaces, ease of operation and efficiency must also be considered. Common types of kinematic positioning interfaces include Maxwell and Kelvin connections. Both of these methods can achieve positioning between separated components, but they cannot achieve locking between them. Typically, an additional locking mechanism is needed to maintain this positioning state in applications, which increases the complexity of the structure and operation. This is detrimental to sub-mirror replacement; the process of replacing sub-mirrors should be as simple and quick as possible to minimize the impact on telescope operating time.

[0005] The importance of the kinematic positioning interface cannot be ignored when replacing sub-mirrors in a modular telescope. It plays a crucial role in ensuring the optical performance and operational efficiency of the modular telescope. Future development requires more precise, reliable, and convenient kinematic positioning interfaces to meet the needs of increasingly complex and large-scale modular telescopes.

[0006] Therefore, based on the above problems, how to provide a kinematic positioning interface structure with locking function has become an important technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0007] The purpose of this invention is to overcome the defects of the existing technology and provide a kinematic positioning interface structure with locking function. Its positioning and locking are integrated, and locking and positioning are arranged in one place without reducing the positioning accuracy of the separate components. This results in higher integration, stronger applicability, and higher convenience and efficiency in operation.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] This invention discloses a kinematic positioning interface structure with locking function, comprising:

[0010] Base and separate components;

[0011] The base and the separating component are projected onto a horizontal plane to form a virtual circle. Multiple connecting holes are evenly distributed on the virtual circle, penetrating the separating component and extending toward the base. A positioning and locking assembly is installed in the connecting hole for positioning and locking the base and the separating component.

[0012] Furthermore, the positioning and locking assembly includes a positioning pin, a pin sleeve, and a locking screw that can pass through the positioning pin and the pin sleeve;

[0013] The locating pin has its top end inserted into the shaft hole of the pin sleeve and forms a locating mating part that makes linear contact with the shaft hole, and the locking screw has its end threadedly connected to the connecting hole of the base.

[0014] Furthermore, the positioning pin is a cylindrical hollow pin with a tapered section at the upper end, which forms the positioning mating part with the shaft hole. The bottom end of the positioning pin has a cylindrical section that mates with the connecting hole of the base.

[0015] Furthermore, the inner diameter of the positioning pin is larger than the outer diameter of the locking screw, and the inner wall of the positioning pin has internal threads.

[0016] Furthermore, the height of the pin sleeve is greater than the height of the tapered section.

[0017] Furthermore, the taper of the shaft hole is not greater than the taper of the tapered segment.

[0018] Furthermore, the shaft hole is constructed as an elongated tapered hole, and the long axis of the shaft hole is collinear with the axis extending from the center of the virtual circle.

[0019] Furthermore, the pin sleeve has a cylindrical structure.

[0020] Furthermore, the outer contour of the pin sleeve includes a straight segment and an arc segment. The straight segment is perpendicular to the long axis of the shaft hole, and the pin sleeve is installed in the connecting hole of the separating component. The straight segment is away from the center of the virtual circle.

[0021] Furthermore, the connecting holes include three sets, and the included angle between two adjacent sets of connecting holes is 120°.

[0022] In the above technical solution, the kinematic positioning interface structure with locking function provided by the present invention has the following advantages:

[0023] The kinematic positioning interface structure designed in this invention, through the rational design of the pin and pin sleeve, enables the positioning interface to have a clamping function. Without reducing the positioning accuracy of the separated parts, locking and positioning are arranged in one place. Compared with commonly used kinematic positioning interfaces, this method has higher integration, stronger applicability, and higher convenience and efficiency in operation. In addition, the cross-sectional design of the pin sleeve is more convenient and accurate in positioning than that of a cylindrical sleeve, which can significantly improve the efficiency of sub-lens replacement. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0025] Figure 1 This is a schematic diagram of the overall structure of a kinematic positioning interface structure with locking function disclosed in this invention;

[0026] Figure 2 This is a schematic diagram of a kinematic positioning interface structure positioning and locking assembly with locking function disclosed in this invention;

[0027] Figure 3 This is a front view of a positioning pin shaft of a kinematic positioning interface structure with locking function disclosed in this invention;

[0028] Figure 4 This is a cross-sectional view of the positioning pin shaft AA, which is a kinematic positioning interface structure with locking function disclosed in this invention.

[0029] Figure 5 This is a schematic diagram of the positioning pin and base being separated in a kinematic positioning interface structure with locking function disclosed in this invention.

[0030] Figure 6This is a top view of a kinematic positioning interface structure pin sleeve with locking function disclosed in this invention;

[0031] Figure 7 This is a cross-sectional view of a pin sleeve with locking function in a kinematic positioning interface structure disclosed in this invention;

[0032] Figure 8 This is a cross-sectional view of a pin sleeve with locking function in the kinematic positioning interface structure disclosed in this invention;

[0033] Figure 9 This is a top view of a kinematic positioning interface structure with locking function disclosed in this invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Base; 11. First connecting hole; 2. Separation component; 21. Second connecting hole; 3. Positioning and locking assembly; 4. Positioning pin; 41. Tapered section; 42. Cylindrical section; 5. Pin sleeve; 51. Shaft hole; 52. Straight section; 53. Arc section; 6. Locking screw; 7. Virtual circle. Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0037] See Figure 1 , 9 As shown;

[0038] An invention provides a kinematic positioning interface structure with locking function, comprising:

[0039] Base 1 and separation component 2;

[0040] The base 1 and the separating component 2 are projected onto a horizontal plane to form a virtual circle 7. Multiple connecting holes are evenly distributed on the virtual circle 7, penetrating the separating component 2 and extending toward the base 1. A positioning and locking assembly 3 is installed in the connecting hole for positioning and locking the base 1 and the separating component 2.

[0041] Specifically, the connecting holes include a first connecting hole 11 and a second connecting hole 21. The base 1 has the first connecting hole 11, and the separating component 2 has the second connecting hole 21 corresponding to the position of the first connecting hole 11. A portion of the positioning and locking assembly 3 is placed in the first connecting hole 11, and the other portion is placed in the second connecting hole 21. Thus, the positioning and locking assembly 3 connects the base 1 and the separating component 2, and provides locking force through its locking screw 6. Figure 1As shown, the kinematic positioning interface structure integrates the positioning and locking base 1 and the separate component 2 through the positioning and locking assembly 3. The positioning and locking assembly 3 has high positioning repeatability, high structural integration, and convenient and efficient operation.

[0042] See Figure 2 As shown;

[0043] Preferably, the positioning and locking assembly 3 includes a positioning pin 4, a pin sleeve 5, and a locking screw 6 that can pass through the positioning pin 4 and the pin sleeve 5;

[0044] In this configuration, the top end of the positioning pin 4 extends into the shaft hole 51 of the pin sleeve 5 and forms a positioning mating part with linear contact with the shaft hole 51. The end of the locking screw 6 is threadedly connected to the connecting hole of the base 1. Specifically, the bottom wall of the first connecting hole 11 of the base 1 has a threaded hole. During assembly, the bottom of the positioning pin 4 mates with the first connecting hole 11, the top end of the positioning pin 4 extends into the shaft hole 51 of the pin sleeve 5, and the outer wall is in line contact with the inner wall of the shaft hole 51, forming a positioning mating part with linear contact. The pin sleeve 5 is placed in the second connecting hole 21. The locking screw 6 passes through the separation component 2, the pin sleeve 5, and the positioning pin 4 in sequence and is threadedly connected to the threaded hole on the bottom wall of the first connecting hole 11. Thus, this interface structure uses the positioning pin 4 and the pin sleeve 5 to position the relative position of the base 1 and the separation component 2 through the positioning mating part, and provides locking force through the locking screw 6 to fasten the separation component 2 to the base 1, thereby achieving integrated positioning and locking of the base 1 and the separation component 2.

[0045] See Figure 3 , 4 As shown;

[0046] Preferably, the positioning pin 4 is a cylindrical hollow pin, with a tapered section 41 at the upper end, which forms a positioning fit with the shaft hole 51 through the tapered section 41. The shaft hole 51 is a tapered hole, and the bottom end of the positioning pin 4 has a cylindrical section 42, which fits with the connecting hole of the base 1.

[0047] Specifically, the pin 4 is a cylindrical hollow pin with a shoulder on the outer wall. The pin 4 has a tapered section 41 with a tapered angle α at the upper part of the shoulder, and a cylindrical section 42 at the lower part of the shoulder. The bottom end of the positioning pin 4 has a cylindrical section 42.

[0048] During assembly, the shoulder of the positioning pin 4 engages with the countersunk hole formed at the top of the first connecting hole 11, the cylindrical section 42 engages with the first connecting hole 11, the pin sleeve 5 is fitted onto the outer wall of the tapered section 41, and the outer wall of the tapered section 41 makes linear contact with the inner wall of the shaft hole 51 to form a positioning engagement part, and the outer wall of the pin sleeve 5 engages with the second connecting hole 21 of the separation component 2.

[0049] See Figure 5 As shown;

[0050] Preferably, the inner diameter of the locating pin 4 is larger than the outer diameter of the locking screw 6, and the inner wall of the locating pin 4 has internal threads. In this structure, to facilitate the separation of the pin 4 from the base 1, the center of the pin 4 is machined with an internal thread with a diameter larger than that of the locking screw 6. When the pin 4 is separated from the base 1, such as... Figure 5 As shown, an external screw is used to engage with the inner diameter thread of the pin 4, and the screw is used to separate the pin 4 and the base 1.

[0051] join Figure 6 , 7 As shown in Figure 8

[0052] Preferably, the shaft hole 51 is constructed as an elongated conical hole, and the long axis of the shaft hole 51 is collinear with the axis extending from the center of the virtual circle 7. Specifically, the shaft hole 51 is a conical hole, and the cross-sectional profile of the conical hole is a closed ring formed by two semicircles and two straight lines symmetrically connecting the two semicircles. The conical hole mates with the conical segment 41, and the outer wall of the conical segment 41 always maintains linear contact with the inner wall of the shaft hole 51. This structure utilizes the characteristics of the conical structure to achieve self-centering. At the same time, to avoid over-positioning of the component, an elongated hole design is adopted to release the degree of freedom of the pin along the long axis of the pin sleeve, so that the conical segment 41 can slide and align itself in the shaft hole 51 along the long axis of the elongated hole. During the sliding process, the conical segment 41 can always maintain linear contact with the shaft hole 51, thereby achieving the positioning purpose.

[0053] Preferably, the taper of the shaft hole 51 is not greater than the taper of the tapered section 41. Specifically, to ensure a tight line contact between the shaft hole 51 and the tapered section 41, the included angle of the shaft hole 51 of the pin sleeve 5 is slightly smaller than the taper angle of the tapered section 41 of the pin 4, and the height of the pin sleeve 5 is generally higher than the height of the tapered section 41 of the positioning pin 4.

[0054] See Figure 6 As shown;

[0055] Preferably, the pin sleeve 5 has a near-cylindrical structure. Specifically, the pin sleeve 5 is a positioning component with a near-cylindrical outer contour. The contour of the second connecting hole 21 is adapted to the outer contour of the pin sleeve 5, which can effectively limit the rotational displacement of the pin sleeve 5 within the second connecting hole 21.

[0056] See Figure 6 As shown; the outer contour of the pin sleeve 5 includes a straight line segment 52 and an arc segment 53, which together form a cylindrical structure. During assembly, the straight line segment 52 is perpendicular to the long axis of the shaft hole 51, and the pin sleeve 5 is installed in the connecting hole of the separation component 2. The straight line segment 52 is away from the center of the virtual circle 7.

[0057] See Figure 9 As shown;

[0058] Preferably, the connecting holes include three sets, and the included angle between two adjacent sets of connecting holes is 120°. That is, the positioning and locking assembly 3 includes three sets, and the three sets of positioning and locking components 2 are evenly installed on the base 1 and the separating component 2. The included angle between the pin sleeves 5 of two adjacent sets of positioning and locking components 2 is 120°. During assembly, the extension lines of the long axis of the shaft hole 51 of the three pin sleeves 5 intersect at the center of the inscribed circle determined by the three pin sleeves 5. That is, the tangent formed by the three straight segments 52 of the pin sleeves 5 faces outward, and the long axis points to the center of the circle.

[0059] In the above technical solution, the kinematic positioning interface structure with locking function provided by the present invention has the following advantages: the kinematic positioning interface structure arranges locking and positioning in one place without reducing the positioning accuracy of the separated parts. Compared with commonly used kinematic positioning interfaces, this method has higher integration, stronger applicability, and higher convenience and efficiency in operation. In addition, the cross-sectional design of the pin sleeve is more convenient and accurate in positioning than that of the cylindrical sleeve, which can greatly improve the efficiency of sub-lens replacement.

[0060] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A kinematic positioning interface structure with locking function, comprising: Base (1) and separate part (2), characterized in that ； The base (1) and the separating component (2) are projected onto a horizontal plane to form a virtual circle (7). Multiple connecting holes are evenly distributed on the virtual circle (7) that penetrate the separating component (2) and extend toward the base (1). A positioning and locking assembly (3) is installed in the connecting hole for positioning and locking the base (1) and the separating component (2). The positioning and locking assembly (3) includes a positioning pin (4), a pin sleeve (5), and a locking screw (6) that can pass through the positioning pin (4) and the pin sleeve (5). The top end of the positioning pin (4) extends into the shaft hole (51) of the pin sleeve (5) and forms a positioning mating part that makes linear contact with the shaft hole (51). The end of the locking screw (6) is threadedly connected to the connecting hole of the base (1) and the locking force is provided by the locking screw (6). The positioning pin (4) is a pin with a shoulder on the outer wall. The upper end of the positioning pin (4) has a tapered section (41), and the bottom end of the positioning pin (4) has a cylindrical section (42). The cylindrical section (42) is engaged with the connecting hole of the base (1). The shoulder of the positioning pin (4) is engaged with the top of the connecting hole of the base (1) to form a countersunk hole. The outer wall of the pin sleeve (5) is engaged with the connecting hole of the separating component (2).

2. The kinematic positioning interface structure with locking function according to claim 1, characterized in that ； The positioning pin (4) is a cylindrical hollow pin.

3. The kinematic positioning interface structure with locking function according to claim 2, characterized in that ； The inner diameter of the positioning pin (4) is larger than the outer diameter of the locking screw (6), and the inner wall of the positioning pin (4) has internal threads.

4. The kinematic positioning interface structure with locking function according to claim 2, characterized in that ； The height of the pin sleeve (5) is greater than the height of the tapered section (41).

5. The kinematic positioning interface structure with locking function according to claim 4, characterized in that ； The taper of the shaft hole (51) is not greater than the taper of the tapered segment (41).

6. The kinematic positioning interface structure with locking function according to claim 1, characterized in that ； The shaft hole (51) is constructed as a long strip-shaped conical hole, and the long axis of the shaft hole (51) is collinear with the axis extending from the center of the virtual circle (7).

7. The kinematic positioning interface structure with locking function according to claim 6, characterized in that ； The pin sleeve (5) has a cylindrical structure.

8. The kinematic positioning interface structure with locking function according to claim 7, Its characteristics are: The outer contour of the pin sleeve (5) includes a straight segment (52) and an arc segment (53). The straight segment (52) is perpendicular to the long axis of the shaft hole (51), and the pin sleeve (5) is installed in the connecting hole of the separating component (2). The straight segment (52) is away from the center of the virtual circle (7).

9. The kinematic positioning interface structure with locking function according to claim 1, characterized in that ； The connecting holes include three sets, and the included angle between two adjacent sets of connecting holes is 120°.

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