Center drilling positioner
By designing a center drilling positioner with positioning discs of multiple different hole diameters and a double bearing drill bushing, the problem of needing to replace the metal drill bushing in traditional positioners is solved, enabling convenient positioning and precise drilling of different hole diameters, and improving ease of operation and drilling accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN SUWO IND CO LTD
- Filing Date
- 2025-04-22
- Publication Date
- 2026-05-08
AI Technical Summary
Commonly available center drill locators can only assist in positioning for one type of hole diameter, requiring the replacement of metal drill bushings of different diameters. This makes operation cumbersome, prone to jamming the drill bit, increases the burden on personnel, and traditional metal drill bushings suffer from severe wear.
A positioning disc was designed with a central screw hole and multiple auxiliary holes of different diameters evenly distributed around it. A double-bearing drill sleeve was installed, and the positioning rod and inner and outer positioning pins cooperated to achieve precise positioning of holes of different diameters. The double-bearing design was adopted to avoid drill bit jamming and wear.
It enables convenient auxiliary positioning of holes of different diameters, improves drilling accuracy and ease of operation, avoids drill bit jamming and wear, and ensures that the position and size of the hole meet the design requirements.
Smart Images
Figure CN224210128U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of auxiliary drilling device technology, and in particular to a central drilling locator. Background Technology
[0002] Drilling holes in wooden boards often requires the assistance of a center drill locator. However, most commercially available center drill locators are single-hole and use metal drill sleeves. In practice, a single-hole locator can only assist in drilling one type of hole diameter. When different hole diameters need to be assisted, different diameter metal drill sleeves must be used, leading to cumbersome operation and the need to carry multiple metal drill sleeves, increasing the workload. Furthermore, using metal drill sleeves can easily cause the drill bit to jam during drilling, resulting in severe wear. To address these problems, this application proposes a center drill locator. Utility Model Content
[0003] To address the above situation and overcome the shortcomings of existing technologies, this utility model provides a center drilling locator. The technical solution it provides includes a positioning disk, characterized in that a central screw hole is formed in the center of the positioning disk, and multiple auxiliary holes evenly distributed around the central screw hole are also formed on the positioning disk. Each auxiliary hole has a different diameter, and a double-bearing drill sleeve is embedded in each auxiliary hole. A positioning rod is movably arranged at the lower end of the positioning disk, and the positioning rod has an inner positioning hole coaxial with and 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 twice the center distance between the central screw hole and each auxiliary positioning hole. The positioning rod is also provided with a movable auxiliary hole located between the inner positioning hole and the outer positioning hole. The central screw hole is coaxially threaded to an inner positioning component. The inner positioning component is composed of a screw head, a stepped groove, and an inner positioning post, which are integrally coaxially formed. The screw head is threaded to the central screw hole, the stepped groove is rotatably connected to the inner positioning hole, and the outer positioning hole is rotatably connected to an outer positioning post with the same diameter as the inner positioning post.
[0004] Preferably, the positioning plate has multiple connecting screw holes evenly distributed around the central screw hole, the upper end of the positioning plate has a recessed groove, the recessed groove is lined with a cover plate, each of the connecting screw holes is threaded with an external cross screw that abuts against the cover plate, the upper part of the central screw hole is threaded with an internal cross screw that abuts against the cover plate, and the cover plate has multiple guide holes that correspond one-to-one with the auxiliary holes.
[0005] The beneficial effects of this utility model are:
[0006] 1. In use, the positioning plate of this application has multiple auxiliary holes of different diameters, and each positioning hole is fitted with a double bearing drill sleeve. The inner diameter of each double bearing drill sleeve is also different, which facilitates the drilling operation of different diameters. In addition, the double bearing drill sleeve adopts a double bearing design, which makes drilling smoother than traditional metal drill sleeves. It avoids drill bit jamming and excessive wear, and can also better control the position and direction of the drill bit. Therefore, it can improve the drilling accuracy and ensure that the position and size of the hole meet the design requirements.
[0007] 2. In use, the positioning rod is rotatably connected to the stepped groove of the inner positioning component through the inner positioning hole. Therefore, the positioning rod can be moved so that the moving auxiliary hole on the positioning rod corresponds to the fixed auxiliary hole of the corresponding specification diameter. Then, the inner positioning post and the outer positioning post are respectively abutted against the two opposite ends of the wooden board that needs to be drilled. At this time, since the center distance between the inner positioning hole and the outer positioning hole is twice the center distance between the center screw hole and each fixed auxiliary hole, and the moving auxiliary hole is located in the middle of the inner positioning hole and the outer positioning hole, and the outer positioning post has the same outer diameter as the positioning post, the moving auxiliary hole is exactly on the center line of the wooden board. Consequently, the fixed auxiliary hole corresponding to the moving auxiliary hole is also located on the center of the wooden board. Drilling can then be performed by passing the drill bit through the fixed auxiliary hole and cooperating with the double bearing drill sleeve therein. The operation is simple, convenient, and highly practical. Attached Figure Description
[0008] Figure 1 This is a first-person perspective stereoscopic sectional view of this utility model.
[0009] Figure 2 This is an enlarged view of region A in the first-person perspective stereoscopic sectional view of this utility model.
[0010] Figure 3 This is a schematic diagram of the present invention in conjunction with a wooden board.
[0011] Figure 4 This is a perspective view of the positioning rod of this utility model.
[0012] Figure 5 This is a perspective view of the internal positioning component of this utility model.
[0013] Figure Labels
[0014] 1. Positioning plate, 2. Center screw hole, 3. Fixed auxiliary hole, 4. Double bearing drill sleeve, 5. Positioning rod, 6. Inner positioning hole, 7. Outer positioning hole, 8. Moving auxiliary hole, 9. Inner positioning component, 10. Screw head, 11. Stepped groove, 12. Inner positioning post, 13. Outer positioning post, 14. Connecting screw hole, 15. Countersunk groove, 16. Cover plate, 17. Outer Phillips screw, 18. Inner Phillips screw, 19. Guide hole, 20. Wooden board. Detailed Implementation
[0015] The following is in conjunction with the appendix Figure 1-5 The specific embodiments of this utility model will be described in further detail.
[0016] In the first embodiment, the technical solution is that, during use, the positioning disk 1 has multiple auxiliary holes 3 of different diameters, and each positioning hole is fitted with a double bearing drill sleeve 4. The inner diameter of each double bearing drill sleeve is also different, which facilitates the drilling operation of different diameters. Furthermore, the double bearing drill sleeve 4 adopts a double bearing design, which makes drilling smoother than traditional metal drill sleeves, avoiding drill bit jamming and excessive wear, while also better controlling the position and direction of the drill bit. Therefore, it can improve the drilling accuracy and ensure that the position and size of the hole meet the design requirements.
[0017] The principle of this application is as follows: Since the positioning rod 5 is rotatably connected to the stepped groove 11 of the inner positioning component 9 through the inner positioning hole 6, the positioning rod 5 can be moved so that the moving auxiliary hole 8 on the positioning rod 5 corresponds to the fixed auxiliary hole 3 of the corresponding specification diameter. Then, the inner positioning post 12 and the outer positioning post 13 respectively abut against the two opposite ends of the wooden board 20 that needs to be drilled. At this time, since the center distance between the inner positioning hole 6 and the outer positioning hole 7 is twice the center distance between the center screw hole 2 and each fixed auxiliary hole 3, and the moving auxiliary hole 8 is located in the middle of the inner positioning hole 6 and the outer positioning hole 7, and the outer positioning post 13 has the same outer diameter as the positioning post, the moving auxiliary hole 8 is exactly on the center line of the wooden board 20. Therefore, the fixed auxiliary hole 3 corresponding to the moving auxiliary hole 8 is also located on the center of the wooden board 20. Then, the drill bit can pass through the fixed auxiliary hole 3 and cooperate with the double bearing drill sleeve 4 to perform drilling operations. The operation is simple, convenient to use, and highly practical.
[0018] In Embodiment Two, based on Embodiment One, a cover plate 16 is laid on top of the positioning disk 1 via a recessed groove 15, and is fixed by an inner cross screw 18 engaging with a connecting hole and an outer cross screw 17 engaging with a central screw hole 2. The cover plate 16 prevents the drill bit from accidentally scratching the end face of the positioning disk 1 during operation. A guide hole 19 corresponding to a fixed auxiliary hole 3 is also arranged on the cover plate 16 to facilitate drill bit operation. The inner positioning component 9 of this application is threaded to the central screw hole 2 via a screw head 10, and the stepped groove 11 of the inner positioning component 9 is rotatably connected to the positioning rod 5, thereby facilitating the movement of the positioning rod 5.
[0019] When drilling holes in the wooden board 20, first select the corresponding auxiliary hole 3 according to the required hole diameter, and move the positioning rod 5 so that the auxiliary hole 3 on the positioning rod 5 is as shown in the attached diagram of the instruction manual. Figure 1 The selected auxiliary hole 3 is shown. Then, place the wooden board 20 that needs drilling as shown in the attached diagram of the instruction manual. Figure 3The arrangement shown makes the two end faces of the wooden board 20 that need to be drilled abut against the positioning rod 5, while the other two end faces abut against the inner positioning post 12 and the outer positioning post 13 respectively. At this time, the selected auxiliary hole 3 corresponds exactly to the center line of the wooden board 20, so that a hole can be drilled on the center line of the wooden board 20.
Claims
1. A center drilling locator, comprising a locating disk (1), characterized in that, The positioning disk (1) has a central screw hole (2) at its center. The positioning disk (1) also has multiple auxiliary holes (3) evenly distributed around the central screw hole (2). The diameter of each auxiliary hole (3) is different. Each auxiliary hole (3) is fitted with a double-bearing drill sleeve (4). A positioning rod (5) is movably arranged at the lower end of the positioning disk (1). The positioning rod (5) has an inner positioning hole (6) coaxial with the central screw hole (2). The positioning rod (5) also has an outer positioning hole (7). The center distance between the inner positioning hole (6) and the outer positioning hole (7) is equal to the distance between the central screw hole (2) and each… The positioning rod (5) is provided with a moving auxiliary hole (8) located between the inner positioning hole (6) and the outer positioning hole (7), which is twice the center distance of the fixed auxiliary hole (3). The central screw hole (2) is coaxially threaded with an inner positioning component (9). The inner positioning component (9) is composed of a screw head (10), a stepped groove (11), and an inner positioning post (12) in an integral coaxial structure. The screw head (10) is threadedly connected to the central screw hole (2). The stepped groove (11) is rotatably connected to the inner positioning hole (6). The outer positioning hole (7) is rotatably connected with an outer positioning post (13) with the same diameter as the inner positioning post (12).
2. The center borehole locator according to claim 1, characterized in that, The positioning disk (1) has multiple connecting screw holes (14) evenly distributed around the central screw hole (2). The upper end of the positioning disk (1) has a groove (15). A cover plate (16) is laid in the groove (15). Each connecting screw hole (14) is threaded with an external cross screw (17) that abuts against the cover plate (16). The upper part of the central screw hole (2) is threaded with an internal cross screw (18) that abuts against the cover plate (16). The cover plate (16) has multiple guide holes (19) that correspond one-to-one with the fixed auxiliary hole (3).