Positioning and clamping mechanism

Abstract

The application relates to the technical field of production auxiliary devices, and provides a positioning and clamping mechanism, which comprises a base, a driving piece and an elastic variable-diameter piece. The driving piece is installed on the base and can make reciprocating linear motion along a first direction. The elastic variable-diameter piece is installed on the base and at least partially exposed to the base. The elastic variable-diameter piece has an accommodating hole extending along the first direction, and the accommodating hole is used for the driving piece to enter and exit. Wherein, a to-be-processed plate piece with a through hole is placed on the base, the through hole of the to-be-processed plate piece is aligned with the elastic variable-diameter piece exposed to the base, positioning of the to-be-processed plate piece is realized, the driving piece enters the accommodating hole of the elastic variable-diameter piece, the elastic variable-diameter piece is expanded in the radial direction, clamping of the to-be-processed plate piece is realized, the elastic variable-diameter piece is expanded to adapt to to-be-processed plate pieces with different hole diameter specifications, and the universality of the positioning and clamping mechanism is improved.

Description

Technical Field

[0001] This invention relates to the field of production auxiliary equipment technology, and in particular to a positioning and clamping mechanism. Background Technology

[0002] A cavity filter is a device or circuit that processes signals. Its main function is to allow useful signals to pass through with minimal attenuation while attenuating unwanted signals as much as possible. It is commonly used as a frequency selection device to select the frequency of communication signals and filter out noise or interference signals outside the communication signal frequency. It is widely used in mobile base stations to reduce intermodulation interference and generate high-quality communication signals, making it an indispensable component in electronic communication systems. As a frequency selection device, cavity filters are currently widely used in the communication field, especially in radio frequency communication.

[0003] A cavity filter consists of a cavity and a cover plate. The cover plate is usually processed as follows: First, the blank is cut into a plate shape that matches the size of the pre-processed cover plate. The blank has through holes. Then, a larger iron plate is used to press the blank onto the worktable. Finally, a pressure plate is used to press the periphery of the blank to achieve positioning and clamping of the blank.

[0004] The iron plate and pressure plate serve as the positioning and clamping mechanism for the cover plate to be processed, enabling the cover plate to be positioned and clamped. However, different specifications and models of cover plates require corresponding specifications of iron plates, resulting in poor versatility of the positioning and clamping mechanism. Summary of the Invention

[0005] The purpose of this invention is to provide a positioning and clamping mechanism that addresses the technical problem of poor versatility in existing positioning and clamping mechanisms.

[0006] This application provides a positioning and clamping mechanism, the positioning and clamping mechanism comprising:

[0007] Base;

[0008] A driving component, which is mounted on the base, is capable of reciprocating linear motion along a first direction;

[0009] An elastic reducing member is mounted on the base, at least partially exposed above the base, and has a receiving hole extending along the first direction for the drive member to enter and exit, wherein the drive member, when located in the receiving hole, allows the elastic reducing member to expand radially.

[0010] In one embodiment, the base has a limiting groove, one end of the elastic variable diameter member is located in the limiting groove, and the other end of the elastic variable diameter member protrudes from the limiting groove.

[0011] In one embodiment, the positioning and clamping mechanism further includes an elastic limiting ring located within the limiting groove, and the elastic limiting ring is sleeved on the elastic variable diameter member.

[0012] In one embodiment, the base has a first limiting block and a second limiting block spaced apart along the first direction, and the elastic variable diameter member has a third limiting block located between the first limiting block and the second limiting block.

[0013] In one embodiment, the end of the driving member includes a first driving segment and a second driving segment, one end of the second driving segment is a free end, the other end of the second driving segment is connected to the first driving segment, and the outer peripheral dimension of the second driving segment is larger than the inner peripheral dimension of the receiving hole of the elastic variable diameter member in its natural state.

[0014] In one embodiment, the outer periphery of the end of the second drive segment away from the first drive segment gradually decreases.

[0015] In one embodiment, the outer periphery of the second drive segment gradually decreases near the end of the first drive segment.

[0016] In one embodiment, the surface of the base has a driving hole, the elastic reducing member is mounted on the surface of the base, the elastic reducing member covers the driving hole, the receiving hole communicates with the driving hole, and the driving member enters and exits the receiving hole through the driving hole.

[0017] In one embodiment, the resilient reducing member includes a sleeve with the receiving hole formed inside the sleeve, and the sleeve is at least partially exposed outside the base.

[0018] In one embodiment, the sleeve has a first through groove extending radially through the sleeve.

[0019] In one embodiment, the elastic reducing member further includes a mounting plate connected to the outer edge of the end of the sleeve and mounted on the base.

[0020] The beneficial effects of the positioning and clamping mechanism provided by this invention are as follows: A workpiece to be processed with a through hole is placed on a base, and the through hole of the workpiece is aligned with the elastic variable diameter member exposed on the base to achieve positioning of the workpiece. The driving member enters the receiving hole of the elastic variable diameter member along the first direction, causing the elastic variable diameter member to expand radially. The elastic variable diameter member exposed on the base expands and presses against the hole wall of the through hole of the workpiece to achieve clamping. After the workpiece is processed, the driving member exits the receiving hole in the first direction, the elastic variable diameter member returns to its original position, and the abutting connection between the elastic variable diameter member and the workpiece is released, making it easy to remove the workpiece. The elastic variable diameter member adapts to workpieces with different hole diameter specifications by expanding, which solves the technical problem of poor versatility of existing positioning and clamping mechanisms, thereby improving the versatility of the positioning and clamping mechanism and reducing the labor intensity of workers. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the positioning and clamping mechanism provided in an embodiment of the present invention;

[0023] Figure 2 for Figure 1 A cross-sectional view of the positioning and clamping mechanism in the middle;

[0024] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0025] Figure 4 This is a schematic diagram showing the fit between a flexible variable diameter component that can rotate around a first direction and a through hole.

[0026] Figure 5 This is a cross-sectional view of the positioning and clamping mechanism when the elastic variable diameter member is in the first position in one embodiment;

[0027] Figure 6 for Figure 5 A cross-sectional view of the positioning and clamping mechanism when the elastic variable diameter component is in the second position in the embodiment;

[0028] Figure 7 This is a cross-sectional view of the positioning and clamping mechanism in yet another embodiment;

[0029] Figure 8 This is a cross-sectional view of the positioning and clamping mechanism in yet another embodiment;

[0030] Figure 9 This is a schematic diagram of the base of the positioning and clamping mechanism in one embodiment;

[0031] Figure 10 This is a schematic diagram of the drive rod of the positioning and clamping mechanism in one embodiment;

[0032] Figure 11 for Figure 10 A magnified view of a portion of the drive rod;

[0033] Figure 12 This is a schematic diagram of the structure of the elastic variable diameter component of the positioning and clamping mechanism in one embodiment;

[0034] Figure 13 This is a schematic diagram of the elastic limiting ring of the positioning and clamping mechanism in one embodiment.

[0035] The following are the labeling elements in the figure:

[0036] X, first direction;

[0037] 10. Plate to be processed; 11. Through hole;

[0038] 100. Base; 101. Limiting groove; 102. Rod hole; 103. First connecting hole; 104. Second connecting hole; 105. First limiting block; 106. Second limiting block; 107. Drive hole;

[0039] 200. Driving component; 210. Power source; 211. Output shaft; 212. First inclined plane; 220. Driving rod; 221. Second inclined plane; 222. First driving section; 223. Second driving section; 224. Third inclined plane; 225. Fourth inclined plane; 226. Deformation groove;

[0040] 300, Flexible reducing component; 301, Receiving hole; 302, Third limiting block; 303, Notch; 310, Sleeve; 311, First through groove; 312, Fifth inclined surface; 320, Mounting plate; 321, Second through groove;

[0041] 400, Elastic limiting ring; 401, Sleeve hole; 402, Third connecting hole. Detailed Implementation

[0042] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0043] Throughout this specification, references to "an embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this application. Therefore, the phrases "in one embodiment" or "in some embodiments" appear in various places throughout the specification, and not all refer to the same embodiment. Furthermore, in one or more embodiments, particular features, structures, or characteristics may be combined in any suitable manner.

[0044] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0045] Furthermore, 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 technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0046] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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 invention according to the specific circumstances.

[0047] The positioning and clamping mechanism in the embodiments of the present invention will now be described.

[0048] Please refer to Figures 1 to 3 This application provides a positioning and clamping mechanism, including a base 100, a drive member 200, and an elastic reducing member 300. The drive member 200 is mounted on the base 100. Optionally, the drive member 200 is fixedly mounted on the base 100 by means of welding, bonding, abutment, snap-fit, pressing, interference fit, threaded connection, or fastener connection. The drive member 200 is capable of reciprocating linear motion along a first direction X.

[0049] The flexible reducer 300 is mounted on the base 100. The flexible reducer 300 is at least partially exposed outside the base 100. In one possible example, it is combined with... Figure 2The flexible reducing member 300 can be partially installed inside the base 100. For example, one end of the flexible reducing member 300 is fixedly or movably installed in the limiting groove 101 of the base 100, while the other end of the flexible reducing member 300 protrudes outside the base 100. In another possible example, combined with... Figure 7 The flexible reducing member 300 may also be entirely exposed outside the base 100, for example, the flexible reducing member 300 may be mounted on the surface of the base 100. In this embodiment, the flexible reducing member 300 has a receiving hole 301 extending along a first direction X. The receiving hole 301 is used for the drive member 200 to enter and exit. When the drive member 200 is located in the receiving hole 301, the flexible reducing member 300 can expand radially.

[0050] The specific usage method of the positioning and clamping mechanism provided in this embodiment is as follows: First, the plate to be processed 10 with a through hole 11 is placed on the base 100. The through hole 11 of the plate to be processed 10 is aligned with the elastic variable diameter member 300 exposed on the base 100 to achieve positioning of the plate to be processed 10. Second, the driving member 200 enters the receiving hole 301 of the elastic variable diameter member 300 along the first direction X, causing the outer peripheral dimension of the elastic variable diameter member 300 to expand and increase. The elastic variable diameter member 300 exposed on the base 100 expands and abuts against the hole wall of the through hole 11 of the plate to be processed 10 to achieve clamping of the plate to be processed 10. After the plate to be processed 10 is processed, the driving member 200 exits the receiving hole 301 along the first direction X, the elastic variable diameter member 300 returns to its original position, and the abutting connection between the elastic variable diameter member 300 and the plate to be processed 10 is released, making it easy to remove the plate to be processed 10. In this way, the driving component 200 of the positioning and clamping mechanism realizes the automatic expansion and restoration of the elastic variable diameter component 300 through the inlet and outlet of the receiving hole 301. The elastic variable diameter component 300 adapts to the plate to be processed 10 with different hole diameter specifications through expansion, which solves the technical problem of poor versatility of the existing positioning and clamping mechanism, thereby improving the versatility of the positioning and clamping mechanism.

[0051] In addition, compared to moving iron plates weighing more than 15 kilograms, the above-mentioned positioning and clamping mechanism only needs to control the drive component 200 to make linear motion, which reduces the labor intensity of the workers.

[0052] The board to be processed 10 can be a cover plate for a filter, a wooden board for furniture, or a circuit board; there is no single limitation here.

[0053] In this embodiment, the outer perimeter dimension refers to the diameter of the circumcircle of the cross-sectional profile. The cross-sectional profile can be a polygon, an ellipse, a circle, or an irregular closed geometric shape. A polygon can be a triangle, quadrilateral, pentagon, or pentagram, etc. When the cross-sectional profile is circular, the circumcircle of the cross-sectional profile is the circle itself; that is, the outer perimeter dimension corresponding to the cross-section is the diameter of the circle. Specifically, the outer perimeter dimension of the elastic diameter reducer 300 refers to the diameter of the circumcircle of the cross-sectional profile of the elastic diameter reducer 300 perpendicular to the first direction X. The cross-sectional profile of the elastic diameter reducer 300 can be a polygon, a circle, an ellipse, or an irregular closed geometric shape, and is not uniquely limited here.

[0054] In this embodiment, the driving member 200 controls the expansion and recovery of the outer periphery of the elastic variable diameter member 300. The driving member 200 is the active member, and the elastic variable diameter member 300 is the passive member. The elastic variable diameter member 300 remains exposed above the base 100, with a basically stable position and high positional reliability, facilitating positioning and engagement with the workpiece 10 to be processed. The through hole 11 of the workpiece 10 to be processed first engages with the elastic variable diameter member 300 exposed above the base 100. The movement of the driving member 200 causes the outer periphery of the elastic variable diameter member 300 to expand and clamp the workpiece 10 to be processed. During the clamping process, the elastic variable diameter member 300 exposed above the base 100 is stably positioned in the through hole 11, ensuring that the relative position of the elastic variable diameter member 300 and the workpiece 10 to be processed is stable and will not cause the position of the workpiece 10 to shift due to the movement of the driving member 200 in the first direction X.

[0055] In this embodiment, the through hole 11 of the plate to be processed 10 can be circular, polygonal, elliptical, or irregular in shape. The end shape of the elastic reducing member 300 exposed in the base 100 can be circular, polygonal, elliptical, or irregular in shape. The end shape refers to the cross-sectional shape perpendicular to the first direction X. The shape of the through hole 11 and the end shape of the elastic reducing member 300 can be the same or different. The elastic reducing member 300 can be fixedly installed in the base 100, or it can be movably installed in the base 100 in the first direction X.

[0056] In one possible example, refer to Figure 3 The flexible reducing member 300 is fixed in the first direction X but rotatable around the first direction X and mounted on the base 100. Since the flexible reducing member 300 has no displacement in the first direction X, and the through hole 11 of the plate to be processed 10 is positioned and engaged with the flexible reducing member 300 exposed in the base 100, even if the flexible reducing member 300 rotates around the first direction X, the position of the plate to be processed 10 remains fixed and will not affect the positioning of the plate to be processed 10.

[0057] In addition, combined Figure 4The elastic reducing component 300 can adapt to through holes 11 of different shapes by rotating, or the elastic reducing component 300 can automatically rotate during the deformation of its outer circumference, thereby expanding along the direction of least resistance, reducing wear between the elastic reducing component 300 and the plate to be processed 10, and can be rotated to the optimal clamping position, thus improving the clamping effect.

[0058] Please refer to Figure 4 The elastic reducing member 300 has a notch 303 in a certain radial direction, which minimizes the deformation resistance of the elastic reducing member 300 in the reducing direction Y (perpendicular to the radial direction where the notch 303 is located), making it easy for elastic deformation to occur. Combined with... Figure 4 (a) The through hole 11 is square in shape, with the notch 303 facing one side wall of the through hole 11. The diameter change direction Y points towards the opposite side walls of the through hole 11, resulting in a small diameter change space. This restricts the expansion of the elastic diameter changer 300, thus reducing the clamping force between the elastic diameter changer 300 and the workpiece 10 to be processed. Combined with... Figure 4 (b) The notch 303 is directly opposite the edge of the through hole 11, and the diameter change direction Y is located on the diagonal of the through hole 11, resulting in a large diameter change space and increasing the clamping force between the elastic diameter changer 300 and the plate to be processed 10. Combined with Figure 3 and Figure 4 When the elastic reducing member 300 can rotate about the first direction X, if the elastic reducing member 300 is initially in Figure 4 At position (a), the deformation of the elastic reducing element 300 is limited, and the clamping force between the elastic reducing element 300 and the plate 10 to be processed is small. Under the drive of the driving element 200, and in accordance with the principle of minimum resistance, the elastic reducing element 300 will automatically rotate to... Figure 4 The position of (b) can be further expanded radially, increasing the clamping force between the elastic variable diameter member 300 and the plate to be processed 10.

[0059] In one possible example, refer to Figure 5 and Figure 6 The elastic diameter reducer 300 is movably mounted on the base 100 along the first direction X over a limited distance. That is, under the constraint of the limiting structure, the elastic diameter reducer 300 can move between a first position and a second position along the first direction X. By moving along the first direction X, the elastic diameter reducer 300 increases or decreases the length of the through hole 11 embedded in the plate 10 to be processed. (See also...) Figure 5 The flexible reducing element 300 has a short length when embedded in the through hole 11, which facilitates the placement and positioning of the workpiece 10 to be processed. (See also...) Figure 6 The large length of the elastic reducing component 300 embedded in the through hole 11 increases the contact area and clamping force between the elastic reducing component 300 and the plate to be processed 10, thereby improving the clamping effect.

[0060] Optionally, the base 100 may also be provided with a guide structure, which restricts the elastic diameter-changing member 300 to move only in the first direction X and prevents it from moving in a plane perpendicular to the first direction X. For example, the base 100 may be provided with a guide rail extending along the first direction X, and the elastic diameter-changing member 300 may be slidably disposed on the guide rail. Alternatively, the base 100 may be provided with a guide wall extending along the first direction X, and the elastic diameter-changing member 300 may be provided with a limiting block that abuts against the guide wall to guide the elastic diameter-changing member 300 to move along the extension direction of the guide wall.

[0061] Specifically, in combination Figure 5 and Figure 6 The base 100 has a first limiting block 105 and a second limiting block 106 spaced apart along a first direction X. The elastic variable diameter member 300 is provided with a third limiting block 302, which is located between the first limiting block 105 and the second limiting block 106. See also Figure 5 The flexible reducing member 300 is initially located in the first position, with the third limiting block 302 abutting against the first limiting block 105. Driven by the driving member 200, the flexible reducing member 300 moves along the first direction X until the third limiting block 302 abuts against the second limiting block 106, restricting further movement of the flexible reducing member 300 along the first direction X. At this point, the flexible reducing member 300 is located in the second position (see...). Figure 6 The driving member 200 continues to enter the receiving hole 301 along the first direction X, and causes the elastic diameter-changing member 300 to expand radially, thereby clamping the plate 10 to be processed. After processing, the driving member 200 moves along the first direction X in the direction of exiting the receiving hole 301, and drives the elastic diameter-changing member 300 to move along the first direction X until the third limiting block 302 stops and abuts against the first limiting block 105, restricting the elastic diameter-changing member 300 from continuing to move along the first direction X. At this time, the elastic diameter-changing member 300 is in the first position, while the driving member 200 continues to exit the receiving hole 301 along the first direction X.

[0062] Optionally, combined Figure 5 and Figure 6 The base 100 has a limiting groove 101. The bottom of the limiting groove 101 is a first limiting block 105. The opening of the limiting groove 101 is provided with a second limiting block 106. The second limiting block 106 does not close the opening so that the elastic variable diameter member 300 can be exposed in the base 100. The third limiting block 302 of the elastic variable diameter member 300 is located in the limiting groove 101 and can move between the first limiting block 105 and the second limiting block 106.

[0063] See Figure 5When the elastic reducing member 300 is in the first position, most of the elastic reducing member 300 can be housed in the limiting groove 101, with the end of the elastic reducing member 300 protruding from the base 100, facilitating the housing of the positioning and clamping mechanism. At the same time, when the elastic reducing member 300 is in the first position, a portion of the elastic reducing member 300 protrudes from the base 100, with a short exposed length, facilitating alignment and insertion with the through hole 11 of the plate to be processed 10.

[0064] Combination Figure 6 During the clamping process, the elastic reducing member 300 first moves with the driving member 200 in the first direction X, increasing the relative area between the elastic reducing member 300 and the hole wall of the through hole 11. After reaching the second position, the outer circumference of the elastic reducing member 300 expands to contact the hole wall of the through hole 11, so the contact area between the two is large and the clamping effect is good.

[0065] In one possible example, refer to Figure 7 The flexible reducing component 300 is fixedly installed on the base 100 by means of welding, bonding, abutment, snap-fit, pressing, interference fit, threaded connection or fastener connection. The fixed position of the flexible reducing component 300 ensures that the plate to be processed 10 is positioned on the base 100 with high precision.

[0066] In this embodiment, the driving component 200 includes a power source 210, which can be a cylinder, a hydraulic cylinder, or a motor; no specific limitation is made to the power source 210 here. The motion output by the power source 210 can be linear motion, optionally a linear module, a telescopic cylinder, or a telescopic hydraulic cylinder; it can also be rotary motion, optionally a motor, a rotary cylinder, or a rotary hydraulic cylinder. Of course, the power source 210 can also be manually driven.

[0067] In this embodiment, the driving member 200 may further include a driving rod 220. The output end of the power source 210 may be directly connected to the driving rod 220, or it may be connected to the driving rod 220 through a transmission mechanism. The driving rod 220 is used to enter the receiving hole 301 of the elastic variable diameter member 300. When the driving rod 220 is located in the receiving hole 301, it can cause the elastic variable diameter member 300 to expand radially. The output end of the power source 210 may be arranged parallel to the driving rod 220, or it may not be arranged parallel to the driving rod 220.

[0068] In some embodiments, reference Figure 2 The output end of the power source 210 is set parallel to the drive rod 220.

[0069] Optionally, the motion output by the power source 210 can be rotational motion. The output end of the power source 210 is threadedly connected to the drive rod 220, so that the drive rod 220 moves linearly along the first direction X as the output end rotates. It can be understood that in other embodiments, the power source 210 can also convert its rotational motion into the linear motion of the drive rod 220 through a transmission mechanism with a gear and rack.

[0070] Optionally, the motion output by the power source 210 can be linear motion. The output end of the power source 210 is connected to the drive rod 220, driving the drive rod 220 to perform telescopic motion in the first direction X. The output end of the power source 210 can be directly connected to the drive rod 220, or it can be connected to the drive rod 220 through a transmission mechanism such as a reducer or coupling.

[0071] In some embodiments, the output end of the power source 210 is not parallel to the drive rod 220.

[0072] Specifically, in combination Figure 8 The power source 210 is equipped with an output shaft 211, which performs linear motion and is perpendicular to the drive rod 220. Optionally, a first inclined surface 212 is provided at the end of the output shaft 211, and the drive rod 220 abuts against the first inclined surface 212. Thus, as the output shaft 211 moves linearly, the drive rod 220 moves on the first inclined surface 212, achieving movement in the first direction X. Alternatively, the drive rod 220 is equipped with a second inclined surface 221, which abuts against the output shaft 211, thereby pushing the drive rod 220 to move in the first direction X through the second inclined surface 221.

[0073] Specifically, in other examples, the output end of the power source 210 can rotate. For example, the output shaft 211 of the power source 210 is connected to a cam, and the drive rod 220 abuts against the cam, enabling it to move linearly in the first direction X as the cam rotates.

[0074] In some embodiments, combined with Figure 2 and Figure 9 The base 100 is provided with a first connection hole 103, and the drive component 200 is fixedly installed on the base 100 through the first connection hole 103. Specifically, when the drive component 200 includes a power source 210, the power source 210 is fixedly installed on the base 100 through the first connection hole 103.

[0075] In some embodiments, combined with Figure 7The flexible reducing element 300 is mounted on the surface of the base 100, and is entirely exposed above the base 100. Specifically, the surface of the base 100 has a driving hole 107. The flexible reducing element 300 is mounted on the surface of the base 100, covering the driving hole 107. The receiving hole 301 communicates with the driving hole 107, and the driving element 200 enters and exits the receiving hole 301 through the driving hole 107. The through hole 11 of the plate to be processed is aligned and positioned with the flexible reducing element 300. The driving element 200 enters the receiving hole 301 through the driving hole 107, causing the flexible reducing element 300 to expand radially and clamp the plate to be processed 10. After processing is completed, the driving element 200 leaves the receiving hole 301, the flexible reducing element 300 returns to its original position, and the clamping connection between the flexible reducing element 300 and the plate to be processed 10 is released.

[0076] The flexible reducing element 300 is entirely located on the surface of the base 100, facilitating its installation. Simultaneously, the receiving hole 301 and the driving hole 107 are aligned, thereby aligning the through hole 11 of the workpiece 10 to be processed with the driving hole 107. The position of the driving hole 107 on the base 100 is fixed, which improves the positioning accuracy of the workpiece 10 and the installation accuracy of the flexible reducing element 300. When the driving element 200 enters the flexible reducing element 300 through the driving hole 107, if there is a positional deviation in the flexible reducing element 300, the driving element 200 will calibrate its installation position, ensuring that the axis of the receiving hole 301 aligns with the axis of the driving hole 107. If the flexible reducing element 300 is fixedly installed on the base 100, the driving element 200 can elastically deform the flexible reducing element 300 to calibrate its installation position. If the flexible reducing member 300 is movably mounted on the base 100, the position of the flexible reducing member 300 moves to be coaxial with the driving hole 107 under the linear motion of the driving member 200.

[0077] Specifically, the driving component 200 includes a power source 210 and a driving rod 220. The power source 210 is fixedly mounted on the base 100, and the power source 210 drives the driving rod 220 to perform linear reciprocating motion in the first direction X, so as to enter and exit the receiving hole 301 through the driving hole 107. Figure 7 In the illustrated embodiment, the drive hole 107, drive rod 220, and receiving hole 301 are coaxially arranged and extend along the first direction X.

[0078] In some embodiments, combined with Figure 2 and Figure 9The base 100 has a limiting groove 101. One end of the elastic reducing member 300 is located in the limiting groove 101, and the other end of the elastic reducing member 300 protrudes from the limiting groove 101. The limiting groove 101 can accommodate part of the elastic reducing member 300, and the plate to be processed 10 can be directly supported on the surface of the base 100. The base 100 has a large surface area, which can well support the plate to be processed 10.

[0079] Optionally, combined Figure 3 and Figure 9 The bottom of the limiting groove 101 has a rod hole 102 penetrating the base 100. The driving component 200 includes a power source 210 and a driving rod 220 connected to the power source 210. The power source 210 is fixedly installed on the side of the base 100 away from the limiting groove 101, and the driving rod 220 is movably inserted into the rod hole 102. The power source 210 is installed on the side of the base 100 away from the elastic reducing member 300. The two components make full use of the installation space on both sides of the base 100, allowing the positioning and clamping mechanism to be compactly arranged and the thickness of the base 100 to be reduced.

[0080] Optionally, the power source 210, drive rod 220, and through hole 11 are coaxially arranged. Both drive rod 220 and through hole 11 extend along a first direction X.

[0081] In some embodiments, combined with Figure 3 , Figure 10 and Figure 11 The end of the driving member 200 includes a first driving segment 222 and a second driving segment 223 connected in sequence. One end of the second driving segment 223 is a free end, and the other end of the second driving segment is connected to the first driving segment 222. The outer circumferential dimension of the second driving segment 223 is larger than that of the first driving segment 222, and the outer circumferential dimension of the second driving segment 223 is larger than the diameter of the receiving hole 301 of the elastic reducing member 300 in its natural state. After the second driving segment 223 enters the receiving hole 301, it will expand the receiving hole 301, causing the elastic reducing member 300 to expand radially. The elastic reducing member 300 abuts against the wall of the through hole 11 of the plate to be processed, thereby clamping the plate to be processed 10.

[0082] The first drive segment 222 is designed to reduce the outer periphery of the end of the drive member 200, and to make it easier for the end of the drive member 200 to be flexibly positioned in the base 100.

[0083] Optionally, the first drive segment 222 and the second drive segment 223 are located at the end of the drive rod 220. The first drive segment 222 is provided to reduce part of the outer peripheral dimensions of the drive rod 220, making it easier for the drive rod 220 to be flexibly arranged in the base 100.

[0084] Optionally, the outer periphery of the first drive section 222 is smaller than the rod hole 102 of the base 100, so that the drive rod 220 can be movably inserted into the base 100 and wear can be reduced.

[0085] Optionally, the outer periphery of the first drive segment 222 may be smaller than the diameter of the receiving hole 301 in its natural state, or it may be equal to or larger than the diameter of the receiving hole 301 in its natural state, without limitation.

[0086] In one embodiment, combined Figure 8 and Figure 9 The outer periphery of the end of the second driving segment 223 furthest from the first driving segment 222 gradually decreases. In other words, the outer periphery of the end of the second driving segment 223 gradually decreases in the direction away from the first driving segment 222, which facilitates the smooth entry of the second driving segment 223 into the receiving hole 301 and reduces the resistance of the driving member 200 into the receiving hole 301. At the same time, the gradual change in the outer periphery of the second driving segment 223 provides a variety of sizes of the second driving segment 223, which can adapt to different hole diameters of the receiving hole 301 and different sizes of the through holes 11 of the workpiece 10 to be processed.

[0087] Optionally, the end of the second driving segment 223 away from the first driving segment 222 is provided with a third inclined surface 224, such that the outer periphery of the second driving segment 223 gradually decreases in the direction away from the first driving segment 222. The third inclined surface 224 can be a plane or an arc surface, and is not limited here.

[0088] In one embodiment, combined Figure 10 and Figure 11 The outer periphery of the second drive segment 223 near the end of the first drive segment 222 gradually decreases. In other words, the outer periphery of the connection end between the second drive segment 223 and the first drive segment 222 gradually decreases in the direction near the first drive segment 222, which is conducive to the smooth exit of the second drive segment 223 from the receiving hole 301.

[0089] Optionally, a fourth inclined surface 225 is provided at the end of the second driving segment 223 near the first driving segment 222, such that the outer periphery of the second driving segment 223 gradually decreases in the direction close to the first driving segment 222. The fourth inclined surface 225 can be a plane or an arc surface, and is not limited here.

[0090] In some embodiments, combined with Figure 10 As the end of the driving member 200 repeatedly enters and exits the receiving hole 301 of the elastic reducing member 300, the end of the driving member 200, while pressing against the elastic reducing member 300, also bears the reaction force of the elastic reducing member 300. The end of the driving member 200 is provided with a deformation groove 226, so that the end of the driving member 200 has an elastic deformation space, realizing stress buffering and absorption.

[0091] Optionally, the deformation groove 226 penetrates the drive member 200 radially. Optionally, the depth of the deformation groove 226 is 1mm to 5mm, which avoids both a depth that is too small, which would prevent the end of the drive member 200 from being buffered and absorbed, making it prone to cracking, and a depth that is too large, which would reduce the structural stiffness of the drive member 200 and prevent it from effectively overcoming the resistance of the elastic diameter reducer 300 to expand and tighten against the elastic diameter reducer 300. In one possible example shown in the figure, the depth of the deformation groove 226 is the same as the height of the third inclined surface 224.

[0092] In some embodiments, combined with Figure 2 , Figure 3 and Figure 12 The elastic reducing component 300 includes a sleeve 310, with a receiving hole 301 formed inside the sleeve 310. At least part of the sleeve 310 is exposed outside the base 100. Because the sleeve 310 is hollow and has a thin-shell structure, it is easily elastically deformed under compressive force, resulting in an increase in its outer circumference. The sleeve 310 can be fitted into the through hole 11 of the plate to be processed 10, and can also be fitted into the end of the driving component 200. The large inner and outer wall areas of the sleeve 310 increase the contact area and enhance the fit.

[0093] In this application, the sleeve 310 can be made of a rigid material or an elastic material.

[0094] In one embodiment, combined Figure 12 The wall thickness of the sleeve 310 gradually decreases at the end furthest from the base 100, meaning its stiffness gradually decreases. This facilitates elastic deformation at the end of the sleeve 310, allowing the outer circumference of the end to easily expand under the pressure of the driving member 200, thus clamping the workpiece 10 to be processed. Furthermore, the stress at the end of the sleeve 310 is difficult to transmit and is most prone to cracking; end deformation easily releases the compressive stress, preventing the sleeve 310 from cracking. In addition, the elastic expansion at the end of the sleeve 310 facilitates elastic expansion in the middle of the sleeve 310, thereby reducing the resistance of the overall elastic expansion of the sleeve 310.

[0095] Optionally, the inner wall of the end of the sleeve 310 away from the base 100 is provided with a fifth inclined surface 312, so that its thickness gradually decreases. The fifth inclined surface 312 can be a plane or a circular arc surface.

[0096] In one embodiment, combined Figure 12 The sleeve 310 has a first through groove 311 that extends radially through the side wall of the sleeve 310, which improves the deformability of the sleeve 310 and makes it easier for the sleeve 310 to expand radially under the extrusion of the drive member 200.

[0097] Optionally, the first through groove 311 is strip-shaped, extending along the first direction X from the end of the sleeve 310 away from the base 100 towards the middle of the sleeve 310. In other words, the first through groove 311 penetrates the end of the sleeve 310, dividing the end of the sleeve 310 into at least two pieces, improving the deformability of the sleeve 310. Under the extrusion of the driving member 200, it can easily deflect and expand radially, while releasing the extrusion stress without cracking. The sleeve 310 has the largest stress distribution gradient along the first direction X, making the material most easily deformed and damaged. Therefore, compared to other shapes such as S-shape, the first through groove 311 is set as a strip shape and parallel to the first direction X, making the sleeve 310 easier to deform and release stress, and the processing path is short, making manufacturing convenient.

[0098] Optionally, the first through groove 311 is strip-shaped and extends along the first direction X from the end of the sleeve 310 near the base 100 to the middle of the sleeve 310. Similarly, the arrangement of the first through groove 311 improves the deformability of the sleeve 310, allowing it to easily deflect and expand radially under the extrusion of the drive member 200, while releasing the extrusion stress without cracking.

[0099] Optionally, the first through groove 311 is strip-shaped and divided into two sections. One section of the first through groove 311 extends along the first direction X from the end of the sleeve 310 away from the base 100 to the middle of the sleeve 310. The other section of the first through groove 311 extends along the first direction X from the end of the sleeve 310 near the base 100 to the middle of the sleeve 310. The two sections of the first through groove 311 are located on the same straight line and are not connected to each other.

[0100] Optionally, there may be multiple first through slots 311, which are distributed at intervals along the circumference of the sleeve 310.

[0101] Optionally, the sleeve 310 and the first drive section 222 of the drive rod 220 are clearance fit to reduce the moving resistance of the drive rod 220.

[0102] In one embodiment, combined Figure 12 The flexible reducing component 300 also includes a mounting plate 320. The mounting plate 320 is connected to the outer edge of the end of the sleeve 310 and extends along the circumferential direction of the sleeve 310. The mounting plate 320 is mounted on the base 100. Compared with the sleeve 310 being connected to the base 100, the entire side of the mounting plate 320 is in contact with the base 100, which can increase the support area and support force, and is beneficial to the stable installation and positioning of the flexible reducing component 300 on the base 100.

[0103] Specifically, in combination Figure 12The mounting plate 320 has a second through groove 321 that extends through the mounting plate 320 along the thickness direction of the mounting plate 320, so as to improve the deformability of the mounting plate 320 and enable the mounting plate 320 to expand its diameter as the sleeve 310 expands its diameter, thereby avoiding stress concentration on the sleeve 310.

[0104] Optionally, the second through groove 321 is strip-shaped and is distributed radially along the sleeve 310 to improve the deformability of the mounting plate 320 while releasing compressive stress without cracking.

[0105] Optionally, there may be multiple second through slots 321, which are distributed at intervals along the circumference of the sleeve 310 on the mounting plate 320.

[0106] Optionally, a fillet is provided at the connection between the mounting plate 320 and the sleeve 310 to avoid stress concentration.

[0107] Specifically, in combination Figure 12 At least one first through groove 311 and at least one second through groove 321 are connected to each other, thereby further increasing the elastic deformation capacity of the elastic variable diameter member 300.

[0108] In this application, the elastic diameter-changing component 300 can have elastic diameter-changing capability through structural design, or through the elasticity of its material. For example, the elastic diameter-changing component 300 is made of a shape memory alloy. Under the extrusion of the driving component 200, the elastic diameter-changing component 300 expands radially. After the external force is removed, it can be restored to its original shape by heating. Alternatively, the elastic diameter-changing component 300 can be made of an elastomeric material, such as rubber, silicone, or elastic plastic. Under the extrusion of the driving component 200, it expands radially. After the external force is removed, the elastic diameter-changing component 300 will gradually spring back to its original shape and return to its original size. Another example is that the elastic diameter-changing component 300 has an internal air-filled cavity. The driving component 200 compresses the air-filled cavity by extruding the elastic diameter-changing component 300, increasing the air pressure inside the cavity and causing it to bulge, thereby clamping the plate 10 to be processed.

[0109] In some embodiments, combined with Figure 3 and Figure 13 The positioning and clamping mechanism also includes an elastic limiting ring 400. The base 100 is provided with a limiting groove 101, and the elastic limiting ring 400 is located in the limiting groove 101. The elastic limiting ring 400 is sleeved on the elastic variable diameter member 300 to restrict the radial movement of the elastic variable diameter member 300, prevent the elastic variable diameter member 300 from moving in a plane perpendicular to the first direction X, ensure the accurate positioning of the elastic variable diameter member 300, and help improve the positioning accuracy of the plate 10 to be processed.

[0110] It should be noted that the elastic limiting ring 400 is restricted in its movement on a plane perpendicular to the first direction X by the inner wall of the limiting groove 101. For example, the outer peripheral wall of the elastic limiting ring 400 limits and abuts against the inner wall of the limiting groove 101, and / or the elastic limiting ring 400 is fixedly installed in the limiting groove 101 by fasteners, thereby restricting the radial movement of the elastic variable diameter member 300. Because the elastic limiting ring 400 is elastic, it can expand as the outer peripheral dimension of the elastic variable diameter member 300 increases, without hindering the deformation of the elastic variable diameter member 300. At the same time, it returns to its original shape as the elastic variable diameter member 300 returns to its original shape, always maintaining radial limitation on the elastic variable diameter member 300, resulting in a good limiting effect.

[0111] Optionally, the elastic limiting ring 400 is made of an elastic material, such as rubber, silicone, or elastic plastic.

[0112] Specifically, when the base 100 is provided with a rod hole 102, the elastic limiting ring 400 is coaxially arranged with the rod hole 102. The elastic limiting ring 400 constrains the elastic variable diameter member 300, so that the receiving hole 301 of the elastic variable diameter member 300 and the rod hole 102 are coaxially arranged. This is beneficial for the drive rod 220 to smoothly enter and exit the receiving hole 301 along the rod hole 102. Furthermore, the elastic limiting ring 400 constrains the elastic variable diameter member 300, making it easier for the receiving hole 301 of the elastic variable diameter member 300 to be aligned with the through hole 11 of the plate to be processed 10. This makes the coaxial positional relationship between the receiving hole 301 and the through hole 11 more stable. When the drive rod 220 enters and exits the receiving hole 301 along the rod hole 102, the clamping effect of the elastic variable diameter member 300 on the plate to be processed 10 is more stable.

[0113] Specifically, the elastic diameter reducing component 300 includes a sleeve 310 and a mounting plate 320. The elastic limiting ring 400 is sleeved on the sleeve 310, and the mounting plate 320 is clamped between the bottom of the limiting groove 101 and the elastic limiting ring 400 to achieve the limiting of the elastic diameter reducing component 300 in the first direction X.

[0114] Optionally, one end of the elastic limiting ring 400 along the first direction X abuts against the mounting plate 320, and the other end of the elastic limiting ring 400 along the first direction X abuts against the plate 10 to be processed. That is, the elastic limiting ring 400 is limited and abuts against the bottom of the limiting groove 101 and the plate 10 to be processed. While realizing the radial limitation of the elastic variable diameter part 300, the elastic limiting ring 400 can also be pressed in the first direction X to realize the limitation of the elastic limiting ring 400 in the first direction X.

[0115] Optionally, the elastic limiting ring 400 is fixedly installed on the base 100, and the mounting plate 320 is clamped between the bottom of the limiting groove 101 and the elastic limiting ring 400 to achieve the limiting of the elastic variable diameter component 300 in the first direction X.

[0116] Optionally, the resilient limiting ring 400 has a socket 401 for fitting the resilient reducing member 300.

[0117] Optionally, combined Figure 9 and Figure 13 The base 100 has a second connecting hole 104, and the elastic limiting ring 400 has a third connecting hole 402. Fasteners pass through the third connecting hole 402 and the second connecting hole 104 to fix the elastic limiting ring 400 to the base 100. It can be understood that in other embodiments, the elastic limiting ring 400 may not be fixed to the base 100, but may be movably disposed in the limiting groove 101 to achieve radial limiting of the elastic variable diameter member 300.

[0118] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A positioning and clamping mechanism, characterized in that, The positioning and clamping mechanism includes: Base; A driving component, which is mounted on the base, is capable of reciprocating linear motion along a first direction; An elastic reducing member is mounted on the base, at least partially exposed above the base, and has a receiving hole extending along the first direction for the drive member to enter and exit. When the drive member is located in the receiving hole, the elastic reducing member can expand radially. The elastic variable diameter member can move between a first position and a second position along the first direction under the constraint of the limiting structure of the base. The elastic variable diameter member increases or decreases the length of the through hole embedded in the plate to be processed by moving in the first direction.

2. The positioning and clamping mechanism according to claim 1, characterized in that: The base has a limiting groove, one end of the elastic variable diameter member is located in the limiting groove, and the other end of the elastic variable diameter member is exposed in the limiting groove.

3. The positioning and clamping mechanism according to claim 2, characterized in that: The positioning and clamping mechanism further includes an elastic limiting ring, which is located in the limiting groove and is sleeved on the elastic variable diameter component.

4. The positioning and clamping mechanism according to claim 1, characterized in that: The base has a first limiting block and a second limiting block spaced apart along the first direction, and the elastic variable diameter member has a third limiting block located between the first limiting block and the second limiting block.

5. The positioning and clamping mechanism according to claim 1, characterized in that: The end of the driving member includes a first driving segment and a second driving segment. One end of the second driving segment is a free end, and the other end of the second driving segment is connected to the first driving segment. The outer circumferential dimension of the second driving segment is larger than the inner circumferential dimension of the receiving hole when the elastic variable diameter member is in its natural state.

6. The positioning and clamping mechanism according to claim 5, characterized in that: The outer periphery of the second drive segment gradually decreases at the end furthest from the first drive segment; and / or, the outer periphery of the second drive segment gradually decreases at the end closest to the first drive segment.

7. The positioning and clamping mechanism according to claim 1, characterized in that: The base has a driving hole on its surface. The elastic variable diameter member is installed on the surface of the base and covers the driving hole. The receiving hole communicates with the driving hole, and the driving member enters and exits the receiving hole through the driving hole.

8. The positioning and clamping mechanism according to any one of claims 1 to 7, characterized in that: The elastic reducing element includes a sleeve, the receiving hole being formed inside the sleeve, and the sleeve being at least partially exposed outside the base.

9. The positioning and clamping mechanism according to claim 8, characterized in that: The sleeve has a first through groove extending radially through the sleeve.

10. The positioning and clamping mechanism according to claim 8, characterized in that: The elastic reducing element also includes a mounting plate, which is connected to the outer edge of the end of the sleeve and is mounted on the base.

Images