Accurate positioning mechanism capable of moving up and down based on lead screw

Abstract

The accurate positioning mechanism comprises a first protective shell, a first rotating shaft is rotationally installed on the inner wall of one side of the first protective shell, one end of the first rotating shaft penetrates through the wall face of one side of the first protective shell and is connected with a rotating handle, a first bevel gear is installed on the first rotating shaft, and a second bevel gear is installed on the first bevel gear. A second protective shell is installed at the upper end of the first protective shell, the upper end of the threaded rod is rotationally installed on the upper inner wall of the second protective shell, a sliding rail is installed on one side wall face of the second protective shell, a connecting block is rotationally connected to the threaded rod, and a positioning block is connected to one side wall face of the connecting block; the position of the sliding block can be accurately controlled by meshing the first bevel gear and the second bevel gear, adjusting lifting of the positioning block and controlling the rotating direction and speed of the rotating handle, so that accurate up-down positioning and finding of the center of the reinforcing steel bar are achieved, operation is easy, and convenience is brought to people.

Description

Technical Field

[0001] The utility model relates to the field of mechanical engineering, in particular to a precise positioning mechanism based on the upward and downward movement of a screw rod. Background Art

[0002] At present, with the advancement of industrial mechanization, mechanical transmission devices have been widely used in various types of equipment. Mechanical transmission devices have certain advanced features, but there are still many problems. The design structure is complex, the transmission is not light, the transmission load is small, the failure rate is high, the maintenance is difficult, the positioning is inaccurate, and the noise is loud. These are the biggest drawbacks of the current mechanical transmission devices. At present, there are many mechanisms on the market for achieving vertical up and down movement. However, some existing mechanisms still have room for improvement in terms of structure, stability or load bearing capacity. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a precise positioning mechanism based on the upward and downward movable screw rod, which drives the positioning block to move upward or downward by turning the handle, thereby achieving precise upward and downward positioning to find the center of the steel bar, bringing convenience to people.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: a precise positioning mechanism based on the upward and downward movement of a screw rod, comprising a first protective shell, a first rotating shaft is rotatably installed on the inner wall of one side of the first protective shell, one end of the first rotating shaft passes through the wall of one side of the first protective shell and is connected to a handle, a first bevel gear is installed on the first rotating shaft, a second protective shell is installed on the upper end of the first protective shell, and a lifting mechanism is installed in the second protective shell.

[0005] Preferably, the lifting mechanism includes a threaded rod, the upper end of the threaded rod is rotatably mounted on the upper inner wall of the second protective shell, the lower end of the threaded rod passes through the lower wall of the second protective shell and is connected to a second bevel gear meshing with the first bevel gear, a slide rail is installed on one side wall of the second protective shell, a connecting block is screwed on the threaded rod, a sliding block is connected to one side wall of the connecting block, the sliding block slides on the slide rail, and a positioning block is connected to one side wall of the connecting block.

[0006] Preferably, the positioning block is a T-shaped structure.

[0007] Beneficial Effects

[0008] The utility model provides a grinding device for ultra-high hardness cutting tools, which has the following beneficial effects: The structure of the utility model is simple. By meshing between the first bevel gear and the second bevel gear, the rotation of the threaded rod is controlled by rotating the handle, and the lifting of the positioning block is adjusted. By controlling the rotation direction and speed of the handle, the position of the slider can be accurately controlled, so as to realize accurate up and down positioning to find the center of the steel bar. The operation is simple and brings convenience to people. Brief Description of the Drawings

[0009] Figure 1 It is the internal structure diagram of the utility model.

[0010] Figure 2 It is the structure diagram of the utility model.

[0011] In the figure: 1, the first protective shell; 2, the first rotating shaft; 3, the handle; 4, the first bevel gear; 5, the second protective shell; 6, the threaded rod; 7, the second bevel gear; 8, the slide rail; 9, the connecting block; 10, the slider; 11, the positioning block. Detailed Embodiment

[0012] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0013] Please refer to Figure 1-2 , the present utility model provides a technical solution: a precise positioning mechanism that can move up and down based on a lead screw, including a first protective shell 1. One inner wall of the first protective shell 1 is rotatably installed with a first rotating shaft 2. One end of the first rotating shaft 2 penetrates through one side wall of the first protective shell 1 and is connected with a handle 3. A first bevel gear 4 is installed on the first rotating shaft 2. A second protective shell 5 is installed at the upper end of the first protective shell 1. A lifting mechanism is installed in the second protective shell 5.

[0014] Further, the lifting mechanism includes a threaded rod 6. The upper end of the threaded rod 6 is rotatably installed on the upper inner wall of the second protective shell 5. The lower end of the threaded rod 6 penetrates through the lower wall surface of the second protective shell 5 and is connected with a second bevel gear 7 that meshes with the first bevel gear 4. A slide rail 8 is installed on one side wall surface of the second protective shell 5. A connecting block 9 is screwed on the threaded rod 6. One side wall surface of the connecting block 9 is connected with a slider 10. The slider 10 slides on the slide rail 8. One side wall surface of the connecting block 9 is connected with a positioning block 11.

[0015] Further, the positioning block 11 is of a T-shaped structure.

[0016] Embodiment: By rotating the throttle grip 3 to drive the rotation of the first rotating shaft 2, through the meshing of the first bevel gear 4 and the second bevel gear 7, the threaded rod 6 is driven to rotate. By sliding the slider 10 on the slide rail 8, the height of the positioning block 11 is adjusted. By controlling the rotation direction and speed of the throttle grip 3, the position of the slider 10 can be accurately controlled, so as to realize accurate up and down positioning to find the center of the steel bar. The operation is simple and brings convenience to people.

[0017] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A precise positioning mechanism based on a screw rod that can move up and down, comprising a first protective shell (1), characterized in that: A first rotating shaft (2) is rotatably mounted on the inner wall of one side of the first protective shell (1), one end of the first rotating shaft (2) passes through the wall of one side of the first protective shell (1) and is connected to a turning handle (3), a first bevel gear (4) is mounted on the first rotating shaft (2), a second protective shell (5) is mounted on the upper end of the first protective shell (1), and a lifting mechanism is mounted inside the second protective shell (5); The lifting mechanism comprises a threaded rod (6), the upper end of the threaded rod (6) is rotatably mounted on the upper inner wall of the second protective shell (5), the lower end of the threaded rod (6) passes through the lower wall of the second protective shell (5) and is connected to a second bevel gear (7) meshing with the first bevel gear (4), a slide rail (8) is installed on one side wall of the second protective shell (5), a connecting block (9) is screwed on the threaded rod (6), a sliding block (10) is connected to one side wall of the connecting block (9), the sliding block (10) slides on the sliding rail (8), and a positioning block (11) is connected to one side wall of the connecting block (9).

2. According to claim 1, a precise positioning mechanism based on the upward and downward movement of the screw rod is characterized in that: The positioning block (11) is a T-shaped structure.

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