Threaded-handle straight-handle drill bit switching extension device

By designing a threaded straight shank drill bit adaptation extension device, the problem of the inability to convert and use of straight shank drill bits in existing drilling tools is solved, and flexible conversion and length extension of drill bit types is achieved, reducing procurement costs and improving production efficiency.

CN222830773UActive Publication Date: 2025-05-06AVIC AVIATION SERVICE SUPPORT (TIANJIN) CO LTD
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Patent Information

Application Number
CN202421521620.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-28
Publication Date
2025-05-06
Estimated Expiration
2034-06-28

AI Technical Summary

Technical Problem

In existing drilling tools, straight-handle drill bits and thread-handle drill bits cannot be converted and used, resulting in increased procurement costs and shortage of drill bits that affect production efficiency.

Method used

A threaded straight shank drill bit adaptation and extension device is designed to enable the adaptation and extension between the drill bit thread shank and the straight shank through the adapter assembly or extension assembly, allowing different types of drill bits to be flexibly connected to the drilling tool.

Benefits of technology

Flexible conversion and length extension of drill bit types are achieved, reducing the procurement cost of drilling tools, and providing alternative usage options when drill bits are short, improving productivity.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a threaded handle straight handle drill bit switching extension device, which relates to the field of drilling processing, and comprises a drill bit, a drilling tool, and a switching assembly and / or an extension assembly used for connecting the drill bit and the drilling tool, the drill bit is connected with the drilling tool through the switching assembly, and the extension assembly is connected with the drilling tool through the switching assembly. The switching assembly is used for realizing switching between a threaded handle and a straight handle of the drill bit; or, the drill bit is connected with the drilling tool through the extending assembly, and the extending assembly is used for extending the length of the drill bit. Flexible conversion between the straight handle and the threaded handle of the drill bit is achieved through the adapter, the first adapter rod and the second adapter rod, meanwhile, the drill bit can be prolonged, the use flexibility of the drill bit is improved, one drilling tool can be correspondingly assembled with drill bits of different types, the purchase cost is reduced, and when the drill bits are in shortage, the drill bit can be conveniently replaced. The two drill bits can be used alternately, and the production schedule is prevented from being affected.
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Description

Technical Field

[0001] The utility model belongs to the field of drilling processing, in particular to a threaded shank straight shank drill bit transfer extension device. Background Art

[0002] Aircraft maintenance and assembly work often requires the use of handheld pneumatic drilling tools, which are light and easy to operate, and can quickly and accurately complete the processing of small diameter holes. Pneumatic drills are suitable for a variety of materials, including composite materials, metals and non-metals, and are particularly suitable for drilling operations in small spaces or inaccessible areas. The drill bits used in processing are divided into straight shanks and threaded shanks. The two types cannot be converted and need to be assembled and used with different drilling tools, which increases the procurement cost of drilling tools. In addition, the consumption of drill bits is large, and it is easy to cause shortages due to insufficient procurement during the production process, affecting production efficiency. Utility Model Content

[0003] In view of this, the utility model aims to provide a threaded shank straight shank drill bit adapter extension device to solve the above technical problems.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A threaded shank straight shank drill bit adapter extension device, comprising a drill bit and a drilling tool, and also comprising an adapter component or an extension component.

[0006] The drill bit is connected to the drilling tool via the adapter assembly, and the adapter assembly is used to achieve the conversion between the threaded shank and the straight shank of the drill bit;

[0007] Alternatively, the drill bit is connected to the drilling tool via the extension component, and the extension component is used to extend the length of the drill bit.

[0008] Furthermore, the drill bit is a straight shank drill bit;

[0009] The adapter assembly comprises an adapter, one end of which is threadedly connected to the drilling tool, and the straight shank drill bit is fixed to the other end of the adapter through a collet and a tightening nut.

[0010] Furthermore, the drill bit is a straight shank drill bit;

[0011] The adapter assembly includes an adapter and a first adapter rod, one end of the first adapter rod is threadedly connected to the drilling tool, the other end of the first adapter rod is threadedly connected to one end of the adapter, and the straight shank drill bit is fixed to the other end of the adapter by a collet and a tightening nut.

[0012] Further, the drill bit is a threaded shank drill bit;

[0013] The extension assembly comprises a second transfer rod, one end of which is fixed to the drilling tool via a drill clamp, and the threaded shank drill bit is threadedly connected to the other end of the second transfer rod.

[0014] Furthermore, the drill bit is a straight shank drill bit;

[0015] The extension assembly includes an adapter and a second adapter rod, one end of the second adapter rod is fixed to the drilling tool through a drill clamp, the other end of the second adapter rod is threadedly connected to one end of the adapter, and the straight shank drill bit is fixed to the other end of the adapter through a collet and a tightening nut.

[0016] Furthermore, the adapter includes a connecting section and a fixing section, and the connecting section and the fixing section are a coaxial columnar structure made in one piece; a circular fixing groove is provided on the outer end surface of the fixing section for connecting a straight shank drill bit; the fixing section is provided with an external thread corresponding to the tightening nut; and the connecting section is provided with an external thread.

[0017] Furthermore, an abutment piece is provided at the connection position between the connecting section and the fixing section for cooperating with the tightening nut to tighten.

[0018] Furthermore, a circular first connecting groove is formed at one end of the first transfer rod, and an inner thread is formed on the inner wall of the first connecting groove; a columnar connecting protrusion is formed at the other end of the first transfer rod, and an outer thread is formed on the outer periphery of the connecting protrusion; the first connecting groove and the connecting protrusion are both coaxially arranged with the first transfer rod.

[0019] Furthermore, a circular second connecting groove is formed at one end of the second transfer rod, and an internal thread is formed on the inner wall of the second connecting groove; an axial connecting end is formed at the other end of the second transfer rod, and a diameter of the connecting end is smaller than a diameter of the second transfer rod, and a transition connection is formed between the connecting end and the second transfer rod; the second connecting groove and the connecting end are both coaxially arranged with the second transfer rod.

[0020] Furthermore, the adapter component and the extension component have built-in magnets.

[0021] Compared with the prior art, the threaded shank straight shank drill bit adapter and extension device described in the utility model has the following beneficial effects:

[0022] The threaded shank straight shank drill bit adapter and extension device described in the utility model can realize flexible conversion between the straight shank and the threaded shank of the drill bit through the adapter, the first adapter rod and the second adapter rod, and can also play the role of extending the drill bit, thereby improving the flexibility of using the drill bit. One drilling tool can be equipped with different types of drill bits, thereby reducing procurement costs, and when drill bits are in short supply, the two drill bits can be used interchangeably to avoid affecting production progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the assembly of the first embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the assembly of the second embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of the assembly of the third embodiment of the present utility model;

[0027] Figure 4 This is a schematic diagram of the assembly of the fourth embodiment of the utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the adapter of the utility model;

[0029] Figure 6 It is a structural schematic diagram of the first transfer rod of the utility model;

[0030] Figure 7 It is a structural schematic diagram of the second transfer rod of the utility model.

[0031] Description of reference numerals:

[0032] 1-drill bit; 2-adapter; 3-drilling tool; 4-first adapter rod; 5-second adapter rod; 21-connecting section; 22-abutment member; 23-fixing section; 24-fixing groove; 41-first connecting groove; 42-connecting protrusion; 51-second connecting groove; 52-connecting end. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0034] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0036] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0037] The utility model provides a threaded shank and straight shank drill bit adapter and extension device, comprising a drill bit 1 and a drilling tool 3, and an adapter component and / or an extension component for connecting the drill bit 1 and the drilling tool 3, wherein the drill bit 1 is connected to the drilling tool 3 via the adapter component, and the adapter component is used to realize the adapter between the threaded shank and the straight shank of the drill bit 1; or, the drill bit 1 is connected to the drilling tool 3 via the extension component, and the extension component is used to extend the length of the drill bit 1.

[0038] In a specific embodiment, the adapter assembly includes an adapter 2. When the drill bit 1 used is a straight shank drill bit 1, the straight shank drill bit 1 and the threaded hole of the drilling tool 3 are directly installed together through the adapter 2 to achieve the conversion between the straight shank and the threaded shank of the drill bit 1.

[0039] One end of the adapter 2 is threadedly connected to the drilling tool 3, and the straight shank drill bit 1 is fixed to the other end of the adapter 2 through a collet and a tightening nut.

[0040] In another specific embodiment, the adapter assembly includes an adapter 2 and a first adapter rod 4. When the drill bit 1 used is a straight shank drill bit 1, the adapter 2 is used in conjunction with the first adapter rod 4 to achieve connection between the straight shank drill bit 1 and the threaded hole of the drilling tool 3, and the length of the first adapter rod 4 can be adjusted according to actual needs to extend the length of the drill bit 1.

[0041] One end of the first adapter rod 4 is threadedly connected to the drilling tool 3, and the other end of the first adapter rod 4 is threadedly connected to one end of the adapter 2. The straight shank drill bit 1 is fixed together with the other end of the adapter 2 through a collet and a tightening nut.

[0042] In another specific embodiment, the extension assembly includes a second adapter rod 5. When the drill bit 1 used is a threaded shank drill bit 1, the drill bit 1 is connected to the straight shank mounting hole of the drilling tool 3 through the second connecting rod, and the length of the second adapter rod 5 can be adjusted according to actual needs to extend the length of the drill bit 1.

[0043] One end of the second transfer rod 5 is fixed to the drilling tool 3 through a drill clamp, and the threaded shank drill bit 1 is threadedly connected to the other end of the second transfer rod 5 .

[0044] In another specific embodiment, the extension assembly includes an adapter 2 and a second adapter rod 5. When the drill bit 1 used is a straight shank drill bit 1, the straight shank drill bit 1 and the straight shank hole of the drilling tool 3 are connected together by using the adapter 2 and the second adapter rod 5. The length of the second adapter rod 5 can be adjusted according to actual needs to extend the length of the drill bit 1.

[0045] One end of the second adapter rod 5 is fixed to the drilling tool 3 through a drill clamp, and the other end of the second adapter rod 5 is threadedly connected to one end of the adapter 2. The straight shank drill bit 1 is fixed to the other end of the adapter 2 through a collet and a tightening nut.

[0046] The specific structures of the adapter 2, the first adapter rod 4, and the second adapter rod 5 used in the above four embodiments are as follows:

[0047] The adapter 2 includes a connecting section 21 and a fixing section 23, which are a coaxial columnar structure made in one piece; a circular fixing groove 24 is provided on the outer end surface of the fixing section 23, and the circular fixing groove 24 is coaxially arranged with the fixing section 23, and is used to connect the straight shank drill bit 1; the fixing section 23 is provided with an external thread corresponding to the tightening nut. The connecting section 21 is provided with an external thread. When in use, the adapter 2 can be directly threadedly installed on the drilling tool 3 through the connecting section 21, or can be threadedly connected through the connecting section 21 and the first connecting groove 41 of the first adapter rod 4, and the adapter 2 and the drilling tool 3 are connected together through the first adapter rod 4. Furthermore, an abutment 22 is provided at the connection position of the connecting section 21 and the fixing section 23, and an abutment nut is mounted on the adapter 2 as the abutment 22, which is used to cooperate with the tightening nut to tighten. When installing the drill bit 1, the drill bit 1 is fixed in the fixing section 23 by means of a collet, and then a tightening nut is screwed in to fix the collet, and the tightening nut abuts against the front end surface of the abutment member 22 to achieve fixation.

[0048] A circular first connecting groove 41 is formed at one end of the first transfer rod 4, and an internal thread is formed on the inner wall of the first connecting groove 41. A columnar connecting protrusion 42 is formed at the other end of the first transfer rod 4, and an external thread is formed on the outer periphery of the connecting protrusion 42. The first connecting groove 41 and the connecting protrusion 42 are both coaxially arranged with the first transfer rod 4. During assembly, the first transfer rod 4 is threadedly connected to the connecting section 21 of the adapter 2 through the first connecting groove 41, and is threadedly connected to the drilling tool 3 through the connecting protrusion 42.

[0049] A circular second connecting groove 51 is formed at one end of the second transfer rod 5, and an internal thread is formed on the inner wall of the second connecting groove 51. An axial connecting end 52 is formed at the other end of the second transfer rod 5, and the diameter of the connecting end 52 is smaller than the diameter of the second transfer rod 5, and the connecting end 52 is transitionally connected with the second transfer rod 5. The second connecting groove 51 and the connecting end 52 are both coaxially arranged with the second transfer rod 5. During assembly, the threaded shank drill bit 1 and the drilling tool 3 can be directly connected together through the second adapter rod 5, the drill bit 1 is threadedly connected to the second connecting groove 51 of the second adapter rod 5, and the connecting end 52 of the second adapter rod 5 is fixed in the straight shank hole of the drilling tool 3 through a drill clamp; or the straight shank drill bit 1 and the drilling tool 3 can be installed by cooperating with the second adapter rod 5 and the conversion head, the drill bit 1 is fixed to the adapter 2 through a collet and a tightening nut, the connecting section 21 of the adapter 2 is threadedly connected to the second connecting groove 51 of the second adapter rod 5, and the connecting end 52 of the second adapter rod 5 is fixed in the straight shank hole of the drilling tool 3 through a drill clamp.

[0050] Furthermore, for easy storage, the adapter assembly and the extension assembly are equipped with built-in magnets. Specifically, the adapter 2, the first connecting rod, and the second connecting rod are all provided with magnets. When storing, the adapter 2, the first connecting rod, and the second connecting rod are placed in a special tool box. The bottom of the storage slot of the tool box is provided with magnets. Through magnetic attraction, the components are ensured to be placed stably to prevent damage to the components in the box due to shaking and bumping during transportation.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A threaded shank straight shank drill bit adapter extension device, comprising a drill bit and a drilling tool, characterized in that: It also includes adapter components or extension components. The drill bit is connected to the drilling tool via the adapter assembly, and the adapter assembly is used to achieve the conversion between the threaded shank and the straight shank of the drill bit; Alternatively, the drill bit is connected to the drilling tool via the extension component, and the extension component is used to extend the length of the drill bit.

2. The threaded shank straight shank drill bit adapter and extension device according to claim 1, characterized in that: The drill bit is a straight shank drill bit; The adapter assembly comprises an adapter, one end of which is threadedly connected to the drilling tool, and the straight shank drill bit is fixed to the other end of the adapter through a collet and a tightening nut.

3. The threaded shank straight shank drill bit adapter and extension device according to claim 1, characterized in that: The drill bit is a straight shank drill bit; The adapter assembly includes an adapter and a first adapter rod, one end of the first adapter rod is threadedly connected to the drilling tool, the other end of the first adapter rod is threadedly connected to one end of the adapter, and the straight shank drill bit is fixed to the other end of the adapter by a collet and a tightening nut.

4. The threaded shank straight shank drill bit adapter and extension device according to claim 1, characterized in that: The drill bit is a threaded shank drill bit; The extension assembly comprises a second transfer rod, one end of which is fixed to the drilling tool via a drill clamp, and the threaded shank drill bit is threadedly connected to the other end of the second transfer rod.

5. The threaded shank straight shank drill bit adapter and extension device according to claim 1, characterized in that: The drill bit is a straight shank drill bit; The extension assembly includes an adapter and a second adapter rod, one end of the second adapter rod is fixed to the drilling tool through a drill clamp, the other end of the second adapter rod is threadedly connected to one end of the adapter, and the straight shank drill bit is fixed to the other end of the adapter through a collet and a tightening nut.

6. A threaded shank straight shank drill bit adapter and extension device according to claim 2, 3 or 5, characterized in that: The adapter includes a connecting section and a fixing section, wherein the connecting section and the fixing section are a coaxial columnar structure made in one piece; a circular fixing groove is provided on the outer end surface of the fixing section for connecting a straight shank drill bit; the fixing section is provided with an external thread corresponding to a tightening nut; and the connecting section is provided with an external thread.

7. The threaded shank straight shank drill bit adapter and extension device according to claim 6, characterized in that: An abutment piece is provided at the connection position between the connecting section and the fixing section for cooperating with the tightening nut to tighten.

8. The threaded shank straight shank drill bit adapter and extension device according to claim 3, characterized in that: A circular first connecting groove is formed at one end of the first transfer rod, and an internal thread is formed on the inner wall of the first connecting groove; a columnar connecting protrusion is formed at the other end of the first transfer rod, and an external thread is formed on the outer periphery of the connecting protrusion; the first connecting groove and the connecting protrusion are both coaxially arranged with the first transfer rod.

9. A threaded shank straight shank drill bit adapter and extension device according to claim 4 or 5, characterized in that: A circular second connecting groove is formed at one end of the second transfer rod, and an internal thread is formed on the inner wall of the second connecting groove; an axial connecting end is formed at the other end of the second transfer rod, and the diameter of the connecting end is smaller than the diameter of the second transfer rod, and the connecting end is transitionally connected to the second transfer rod; the second connecting groove and the connecting end are both coaxially arranged with the second transfer rod.

10. The threaded shank straight shank drill bit adapter and extension device according to claim 1, characterized in that: The adapter component and the extension component have built-in magnets.