Screw

Abstract

The invention discloses a screw. The screw is characterized by comprising a shaft part (35), a first stud (31-1), a second stud (31-2), an adjusting part (37) and a bearing part (36); and in the screw(3), the adjustment part (37) and the shaft part (35) are both cylindrical, and the adjustment part (37) and the shaft part (35) are coaxial. The screw is simple in structure, stable in structure andconvenient to use, can timely find the error of a hole opening machine, and facilitates adjustment.

Description

technical field

[0001] The invention relates to the field of drill bits, in particular to screw rods. Background technique

[0002] The hole saw is a common tool in the field of mechanical processing. The existing hole saw has a fixed hole diameter and an adjustable hole saw. The existing adjustable hole saw has low precision and cannot be found in time when an error occurs. technical problem. Contents of the invention

[0003] In order to solve the problems referred to above, the present invention has designed screw rod, and summary of the invention is as follows.

[0004] 1. screw rod, it is characterized in that: comprise axle portion (35), the first stud (31-1), the second stud (31-2), adjusting portion (37), bearing portion (36); Screw rod (3 ): both the adjustment part (37) and the shaft part (35) are cylindrical, and the adjustment part (37) and the shaft part (35) are coaxial;

[0005] In the screw (3): the first end of the second stud (31-2) is fixedly connecte...

Examples

Embodiment 1

[0041] Embodiment 1, an adjustable hole opener is characterized in that: it includes a drill stand (1), a knife rest (2), a screw rod (3), a baffle plate (4), a guard plate (5), a positioning gear (6) ), buckle (7), blade (8), spring (9), button (10), scale plate (14), buckle plate (69);

[0042] The drilling frame (1) includes a support rod (1-1), a slide rail (1-2), a connecting column (1-3), a first screw hole (1-5-1), a second screw hole (1-5 -2); in the drill stand (1): the slide rail (1-2) consists of the first sliding column (1-2-1), the second sliding column (1-2-2), the third sliding column (1- 2-3), the fourth sliding column (1-2-4) constitutes;

[0043] In the drill stand (1): the first screw hole (1-5-1) and the second screw hole (1-5-2) are located on the support rod (1-1);

[0044] In the drill stand (1): the first sliding column (1-2-1), the second sliding column (1-2-2), the third sliding column (1-2-3), the fourth sliding column (1- 2-4), all four have a fi...

Embodiment 2

[0152] Embodiment 2, based on Embodiment 1, further: in the drill frame (1): the second end (1-4-1) of the first sliding post (1-2-1) has an eleventh installation hole ( 1-4-11); the eleventh mounting hole (1-4-11), the first sliding column (1-2-1), the axes of the two are perpendicular.

Embodiment 3

[0153] Embodiment 3, based on Embodiment 1, further: in the drill frame (1): the second end (1-4-2) of the second strut (1-2-2) has a twenty-first installation hole (1-4-21); the twenty-first mounting hole (1-4-21), the second sliding column (1-2-2), the two axes are vertical.

technical field

[0001] The invention relates to the field of drill bits, in particular to screw rods. Background technique

[0002] The hole saw is a common tool in the field of mechanical processing. The existing hole saw has a fixed hole diameter and an adjustable hole saw. The existing adjustable hole saw has low precision and cannot be found in time when an error occurs. technical problem. Contents of the invention

[0003] In order to solve the problems referred to above, the present invention has designed screw rod, and summary of the invention is as follows.

[0004] 1. screw rod, it is characterized in that: comprise axle portion (35), the first stud (31-1), the second stud (31-2), adjusting portion (37), bearing portion (36); Screw rod (3 ): both the adjustment part (37) and the shaft part (35) are cylindrical, and the adjustment part (37) and the shaft part (35) are coaxial;

[0005] In the screw (3): the first end of the second stud (31-2) is fixedly connecte...

Examples

Embodiment 1

[0041] Embodiment 1, an adjustable hole opener is characterized in that: it includes a drill stand (1), a knife rest (2), a screw rod (3), a baffle plate (4), a guard plate (5), a positioning gear (6) ), buckle (7), blade (8), spring (9), button (10), scale plate (14), buckle plate (69);

[0042] The drilling frame (1) includes a support rod (1-1), a slide rail (1-2), a connecting column (1-3), a first screw hole (1-5-1), a second screw hole (1-5 -2); in the drill stand (1): the slide rail (1-2) consists of the first sliding column (1-2-1), the second sliding column (1-2-2), the third sliding column (1- 2-3), the fourth sliding column (1-2-4) constitutes;

[0043] In the drill stand (1): the first screw hole (1-5-1) and the second screw hole (1-5-2) are located on the support rod (1-1);

[0044] In the drill stand (1): the first sliding column (1-2-1), the second sliding column (1-2-2), the third sliding column (1-2-3), the fourth sliding column (1- 2-4), all four have a fi...

Embodiment 2

[0152] Embodiment 2, based on Embodiment 1, further: in the drill frame (1): the second end (1-4-1) of the first sliding post (1-2-1) has an eleventh installation hole ( 1-4-11); the eleventh mounting hole (1-4-11), the first sliding column (1-2-1), the axes of the two are perpendicular.

Embodiment 3

[0153] Embodiment 3, based on Embodiment 1, further: in the drill frame (1): the second end (1-4-2) of the second strut (1-2-2) has a twenty-first installation hole (1-4-21); the twenty-first mounting hole (1-4-21), the second sliding column (1-2-2), the two axes are vertical.

Images