CN-224210128-U - Center drilling locator

Abstract

The utility model relates to the technical field of auxiliary drilling devices, in particular to a central drilling positioner which is characterized in that a central screw hole is formed in the center of a positioning disc, a plurality of positioning auxiliary holes uniformly distributed around the central screw hole are formed in the positioning disc, the diameters of the positioning auxiliary holes are different, a double-bearing drill bushing is embedded in each positioning auxiliary hole, a positioning rod is movably arranged at the lower end of the positioning disc, an inner positioning hole coaxially corresponding to the central screw hole is formed in the positioning rod, an outer positioning hole is further formed in the positioning rod, the center distance between the inner positioning hole and the outer positioning hole is 2 times of the center distance between the central screw hole and each positioning auxiliary hole, a movable auxiliary hole positioned between the inner positioning hole and the outer positioning hole is further formed in the positioning rod, the central screw hole is coaxially and in threaded connection with an inner positioning piece, the inner positioning piece is integrally and coaxially formed by a screw head, a stepped groove and an outer positioning column, and the outer positioning column with the same diameter as the inner positioning column is rotatably connected to the outer positioning rod.

Inventors

• SU TIANJIE
• YU HAIYAN

Assignees

• 河南苏沃实业有限公司

Dates

Publication Date

20260508

Application Date

20250422

Claims (2)

1. 1. The utility model provides a center drilling locator, includes positioning disk (1), its characterized in that, center screw (2) have been seted up at positioning disk (1) center, still set up a plurality of centering auxiliary holes (3) that encircle center screw (2) equipartition on positioning disk (1), each centering auxiliary hole (3) aperture is different, each centering auxiliary hole (3) are embedded in and are equipped with duplex bearing drill bushing (4), positioning disk (1) lower extreme activity has arranged locating lever (5), locating lever (5) have seted up interior locating hole (6) coaxial with center screw (2) corresponding, still set up outer locating hole (7) on locating lever (5), the centre of a circle distance of interior locating hole (6) and outer locating hole (7) is 2 times of the centre of a circle distance of center screw (2) and each centering auxiliary hole (3), locating lever (5) have still been seted up and have been located moving auxiliary hole (8) in the middle of interior locating hole (6) and outer locating hole (7), coaxial connecting piece (2) have set up locating lever (9), screw (10) and screw (10) are located coaxial with the screw (10) and are located the coaxial head (10) and are located the screw (10), the stepped groove (11) is rotationally connected with the inner positioning hole (6), and the outer positioning hole (7) is rotationally connected with an outer positioning column (13) with the same diameter as the inner positioning column (12).
2. 2. The central drilling positioner according to claim 1, wherein a plurality of connecting screw holes (14) uniformly distributed around the central screw hole (2) are formed in the positioning disc (1), a sinking groove (15) is formed in the upper end of the positioning disc (1), a cover plate (16) is paved in the sinking groove (15), each connecting screw hole (14) is respectively and in threaded connection with an outer cross screw (17) in butt joint with the cover plate (16), an inner cross screw (18) in butt joint with the cover plate (16) is in threaded connection with the upper portion of the central screw hole (2), and a plurality of guide holes (19) in one-to-one correspondence with the auxiliary fixing holes (3) are formed in the cover plate (16).

Description

Center drilling locator Technical Field The utility model relates to the technical field of auxiliary drilling devices, in particular to a central drilling positioner. Background The drilling of wood boards often requires assistance from a central drill locator, which is commonly single hole in the market and employs a metal drill sleeve. However, in the actual use process, the single-hole positioner can only carry out auxiliary punching on the aperture with one specification, when the auxiliary positioning is carried out on the aperture with different specifications, the metal drill sleeves with different apertures are required to be replaced, so that the operation is complicated, a plurality of metal drill sleeves are required to be carried, the burden of personnel is increased, in addition, the drill bit is easy to be blocked in the punching process by adopting the metal drill sleeves, and the abrasion on the drill bit is serious. In view of the above, the present application provides a center hole locator. Disclosure of utility model Aiming at the situation, the utility model provides a central drilling positioner for overcoming the defects of the prior art, and the technical scheme of the central drilling positioner is characterized by comprising a positioning disc, wherein the center of the positioning disc is provided with a central screw hole, the positioning disc is also provided with a plurality of positioning auxiliary holes uniformly distributed around the central screw hole, the aperture of each positioning auxiliary hole is different, a double-bearing drill bushing is embedded in each positioning auxiliary hole, the lower end of the positioning disc is movably provided with a positioning rod, the positioning rod is provided with a positioning hole coaxially corresponding to the central screw hole, the positioning rod is also provided with an outer positioning hole, the center distance between the inner positioning hole and the outer positioning hole is 2 times the center distance between the central screw hole and each positioning auxiliary hole, the positioning rod is also provided with a movable positioning auxiliary hole positioned between the inner positioning hole and the outer positioning hole, the central screw hole is coaxially and in threaded connection with a positioning piece, the positioning piece is formed by coaxially connecting a screw head, a stepped groove and a positioning column, the screw head is coaxially connected with the central screw hole, the stepped groove is connected with the positioning column in a rotating way, and the diameter of the positioning column is the same as that of the positioning column. Preferably, the positioning plate is provided with a plurality of connecting screw holes uniformly distributed around the central screw hole, the upper end of the positioning plate is provided with a sinking groove, a cover plate is paved in the sinking groove, each connecting screw hole is respectively in threaded connection with an outer cross screw in butt joint with the cover plate, the upper part of the central screw hole is in threaded connection with an inner cross screw in butt joint with the cover plate, and the cover plate is provided with a plurality of guide holes in one-to-one correspondence with the auxiliary fixing holes. The beneficial effects of the utility model are as follows: 1. The double-bearing drill sleeve is designed by double bearings, is smoother than the traditional metal drill sleeve in punching, can better control the position and direction of a drill bit while avoiding the blocking and excessive abrasion of the drill bit, and therefore can improve the accuracy of drilling and ensure the position and the size of the hole to meet the design requirements. 2. When the positioning rod is used, the positioning rod is rotationally connected with the stepped groove of the positioning piece through the inner positioning hole, so that the movable auxiliary hole on the positioning rod corresponds to the fixed auxiliary hole with the corresponding specification aperture, then the inner positioning column and the outer positioning column are respectively abutted against the two opposite back ends of the wood board to be punched, at the moment, the center distance between the inner positioning hole and the outer positioning hole is 2 times of the center distance between the center screw hole and each fixed auxiliary hole, the movable auxiliary hole is positioned between the inner positioning hole and the outer positioning hole, the outer positioning column is the same as the outer diameter of the positioning column, the movable auxiliary hole is positioned on the middle line of the wood board at the moment, and then the fixed auxiliary hole corresponding to the movable auxiliary hole is positioned on the center of the wood board at the moment, so that the drilling operation can be carried out through a drill bit penetrating through the fixed auxiliary