High-precision telescopic mechanism

Abstract

According to the high-precision telescopic mechanism, an axial through hole is formed in a guide seat, a sliding shaft is arranged in the axial through hole in a penetrating mode, guide sliding grooves consistent with the axial through hole in direction are formed in the two opposite side faces of the guide seat respectively, the guide sliding grooves are communicated with the axial through hole, and a poke rod is arranged in the middle of the sliding shaft in a penetrating mode in the radial direction of the sliding shaft; the two ends of the poke rod penetrate out of the guide sliding grooves in the corresponding sides respectively. Two positioning holes are formed in the limiting plate and correspond to the two ends of the guide sliding groove respectively, and when the poke rods are located at the two ends of the guide sliding groove respectively, the inner ends of the poke rods stretch into the corresponding positioning holes to lock the poke rods. And the whole structure is simple, the positioning device is suitable for positioning various narrow notches in the machining process, and reuse is convenient.

Description

Technical Field

[0001] The utility model relates to the field of tooling accessories, in particular to a high-precision telescopic mechanism. Background Art

[0002] In the process of processing parts with grooves or holes, it is necessary to position the groove space of the parts in a limited space. Currently, there is no special positioning part for positioning. The processing personnel can only modify the existing shafts and pins to fix the parts. Since there is no special positioning and locking, it is generally temporarily assembled on site. Therefore, after the parts are processed, the next time the same structure that needs to be positioned and locked for the groove is encountered, it is necessary to temporarily assemble according to the on-site materials, and it cannot be effectively reused. Therefore, in order to solve the above problems, a mechanism is needed to position and lock the narrow position of the parts. Utility Model Content

[0003] In view of the shortcomings of the prior art, the utility model proposes a high-precision telescopic mechanism, and the specific technical solution is as follows:

[0004] High-precision telescopic mechanism, characterized by:

[0005] It includes a guide seat, a sliding shaft, a toggle rod, a limit plate and a limit sleeve;

[0006] The guide seat is provided with an axial through hole, the sliding shaft is inserted into the axial through hole, two opposite side surfaces of the guide seat are respectively provided with guide slots in the same direction as the axial through hole, the guide slots are connected with the axial through hole, and the toggle rod is inserted in the middle of the sliding shaft along the radial direction of the sliding shaft;

[0007] The two ends of the toggle rod respectively pass through the guide slots on the corresponding sides;

[0008] Two positioning holes are respectively arranged on the limiting plate, and the two positioning holes correspond to the two ends of the guide slide groove respectively. When the toggle rod is respectively located at the two ends of the guide slide groove, the toggle rod extends into the corresponding positioning holes.

[0009] In order to better implement the utility model, it can be further provided that: a handle is provided at the outer end of the toggle rod, and the toggle rod drives the sliding shaft to slide in the axial through hole by pushing and pulling the handle.

[0010] Further: a limit plate is installed on the side of the guide seat, and a limit groove consistent with the guide slide groove is opened in the middle of the limit plate;

[0011] A first limiting hole is formed at one end of the limiting groove, and a second limiting hole is formed at the other end of the limiting groove;

[0012] The first limiting hole and the second limiting hole have the same structure, the apertures of the first limiting hole and the second limiting hole are larger than the width of the limiting groove, and a limiting ring adapted to the structure of the first limiting hole and the second limiting hole is fixedly sleeved on the toggle rod.

[0013] The beneficial effects of the utility model are as follows: the overall structure is simple, suitable for positioning various narrow slots during the processing, and convenient for reuse. The sliding shaft is slidably installed in the axial through hole, the guide groove limits the stroke of the sliding shaft, and the toggle rod extends out of the guide groove to prevent the sliding shaft from sliding out of the axial through hole. When the sliding shaft needs to be extended to lock the processing assembly, the inner end of the toggle rod withdraws from the first positioning hole, and the limit ring withdraws from the second limiting hole. Then the toggle rod drives the sliding shaft to slide in the direction of the first limiting hole, so that the limit ring is aligned with the first limiting hole, the sliding shaft locks the processing assembly, and the toggle rod is pushed inward so that the inner end of the toggle rod is inserted into the first positioning hole, and the limit ring is located in the first limiting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the first structural diagram of the utility model;

[0015] Figure 2 This is the second structural diagram of the utility model;

[0016] Figure 3 This is the structural diagram of the guide seat;

[0017] Figure 4 It is a schematic diagram of the connection of sliding parts;

[0018] Figure 5 It is the structural diagram of the limit plate;

[0019] The accompanying drawings in the figure illustrate a guide seat 1, a sliding shaft 2, a toggle rod 3, a limiting ring 4, a handle 5, a limiting plate 6, a first limiting hole 7, a second limiting hole 8, a limiting sleeve 9, an axial through hole 10, a first guide slot 11, a second guide slot 12, a positioning plate 13, a first positioning hole 14, and a second positioning hole 15. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present utility model, it should be noted that the terms "vertical", "upper", "lower", "horizontal" 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 utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present utility model. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] like Figures 1 to 5 As shown:

[0023] The high-precision telescopic mechanism comprises a guide seat 1, a sliding shaft 2, a toggle rod 3, a limit plate 6 and a limit sleeve 9;

[0024] The guide seat 1 is provided with an axial through hole 10 , and the sliding shaft 2 is inserted into the axial through hole 10 . Two opposite side surfaces of the guide seat 1 are respectively provided with guide grooves in the same direction as the axial through hole 10 , and the guide grooves are connected to the axial through hole 10 .

[0025] Specifically, for ease of understanding, the two side surfaces of the guide seat 1 are respectively a first side surface and a second side surface that are oppositely arranged, and the two guide slots are respectively a first guide slot 11 and a second guide slot 12 .

[0026] A first guide slot 11 is provided on the first side surface of the guide seat 1, and a second guide slot 12 corresponding to the first guide slot 11 is provided on the second side surface of the guide seat 1. The first guide slot 11 and the second guide slot 12 have the same structure, and both the first guide slot 11 and the second guide slot 12 are connected to the axial through hole 10. The toggle rod 3 is arranged in the middle of the sliding shaft 2 along the radial direction of the sliding shaft 2;

[0027] Two positioning holes are respectively provided on the limit plate 6. For the convenience of description, the two positioning holes are respectively a first positioning hole 14 and a second positioning hole 15. The first positioning hole 14 and the second positioning hole 15 respectively correspond to the two ends of the guide slide groove. When the toggle rod 3 is respectively located at the two ends of the guide slide groove, the toggle rod 3 extends into the corresponding positioning holes.

[0028] The sliding shaft 2 is inserted into the axial through hole 10 , and the length direction of the first guide slot 11 and the second guide slot 12 is consistent with the sliding direction of the sliding shaft 2 .

[0029] A toggle rod 3 is radially provided in the middle of the sliding shaft 2, the inner end of the toggle rod 3 passes through the first guide slot 11, and the outer end of the toggle rod 3 passes through the second guide slot 12. A handle 5 is provided at the outer end of the toggle rod 3. By pushing and pulling the handle 5, the toggle rod 3 drives the sliding shaft 2 to slide in the axial through hole 10. The lengths of the first guide slot 11 and the second guide slot 12 are the sliding stroke of the sliding shaft 2.

[0030] A limiting plate 6 is installed on the second side surface of the guide seat 1, and a limiting groove consistent with the second guide slide groove 12 is opened in the middle of the limiting plate 6, a first limiting hole 7 is opened at the left end of the limiting groove, and a second limiting hole 8 is opened at the right end of the limiting groove. The first limiting hole 7 and the second limiting hole 8 have the same structure, and the apertures of the first limiting hole 7 and the second limiting hole 8 are larger than the width of the limiting groove. A limiting ring 4 adapted to the structure of the first limiting hole 7 and the second limiting hole 8 is fixedly sleeved on the toggle rod 3.

[0031] Principle of the utility model: initially, the sliding shaft 2 is in a retracted state, the toggle rod 3 is located at the right end of the first guide slot 11 and the second guide slot 12, the inner end of the toggle rod 3 is inserted into the second positioning hole 15, and the limiting ring 4 is located in the second limiting hole 8.

[0032] When the sliding shaft 2 needs to be extended to lock the processing assembly, the inner end of the toggle rod 3 exits the first positioning hole 14, and the limit ring 4 exits the second limit hole 8. Then the toggle rod 3 drives the sliding shaft 2 to slide toward the first limit hole 7, so that the limit ring 4 is aligned with the first limit hole 7, the sliding shaft 2 locks the processing assembly, and the toggle rod 3 is pushed inward, so that the inner end of the toggle rod 3 is inserted into the first positioning hole 14, and the limit ring 4 is located in the first limit hole 7.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. High-precision telescopic mechanism, characterized by: It includes a guide seat, a sliding shaft, a toggle rod, a limit plate and a limit sleeve; The guide seat is provided with an axial through hole, the sliding shaft is inserted into the axial through hole, two opposite side surfaces of the guide seat are respectively provided with guide slots in the same direction as the axial through hole, the guide slots are connected with the axial through hole, and the toggle rod is inserted in the middle of the sliding shaft along the radial direction of the sliding shaft; The two ends of the toggle rod respectively pass through the guide slots on the corresponding sides; Two positioning holes are respectively provided on the limit plate, and the two positioning holes correspond to the two ends of the guide slide groove respectively. When the toggle rod is respectively located at the two ends of the guide slide groove, the toggle rod is locked by extending the inner end into the corresponding positioning hole.

2. The high-precision telescopic mechanism according to claim 1, characterized in that: A handle is arranged at the outer end of the toggle rod. By pushing and pulling the handle, the toggle rod drives the sliding shaft to slide in the axial through hole.

3. The high-precision telescopic mechanism according to claim 2, characterized in that: A limit plate is installed on the side of the guide seat, and a limit groove consistent with the guide slide groove is opened in the middle of the limit plate; A first limiting hole is formed at one end of the limiting groove, and a second limiting hole is formed at the other end of the limiting groove; The first limiting hole and the second limiting hole have the same structure, the apertures of the first limiting hole and the second limiting hole are larger than the width of the limiting groove, and a limiting ring adapted to the structure of the first limiting hole and the second limiting hole is fixedly sleeved on the toggle rod.

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