A stepped drill with a separable shank and body

Abstract

The utility model discloses a kind of drill shank and drill body separable stepped drill, comprising: stepped drill drill head drill body;Stepped drill quick installation handle, the stepped drill quick installation handle is installed and is connected on the lower end inner side of stepped drill drill head drill body;Elastic extrusion mechanism, the elastic extrusion mechanism is movably installed in the upper end inner side of stepped drill quick installation handle, the stepped drill quick installation handle and stepped drill drill head drill body of the utility model are assembled by the way of sleeve joint, then fixed by assembly screw, so that it is more convenient when assembling, elastic extrusion mechanism top can move downward when being extruded by stepped drill drill head drill body, elastic extrusion mechanism can extrude and contact positioning mechanism exposed to contact positioning when being pressed down, contact positioning mechanism exposes on stepped drill quick installation handle, so that effective contact positioning can be achieved, so that the stepped drill drill head drill body outside is effectively fixed and placed.

Description

Technical Field

[0001] This utility model relates to the field of stepped drill technology, specifically to a stepped drill where the drill shank and drill body are separable. Background Technology

[0002] A step drill is a tool used for drilling holes, mainly for drilling thin steel plates within 3mm. One drill bit can replace multiple drill bits, and can process holes of different diameters as needed. It can also complete the processing of large holes in one go without changing drill bits or drilling positioning holes.

[0003] The existing Chinese patent CN110681892A, disclosed on January 14, 2020, discloses a socket-type pagoda drill, including: a drill body and a drill shank; the drill body is divided into a drill head, an outer cutting body and an inner drill body, the drill head is provided with a connecting part at the tail, the connecting part has a conical boss, the outer cutting body is provided with a through hole at the head, the through hole has a conical surface, the outer cutting body is a hollow cavity and is provided with a positioning groove inside, the inner drill body and the drill shank are integrated, the inner drill body is provided with a connecting hole at the head, and the inner drill body is provided with a protruding limiting block at the head.

[0004] However, when the drill body and drill shank of the above-mentioned device are installed separately, the overall installation is not very firm and tight, and there is a lack of corresponding quick assembly structure during the overall installation, which makes it inconvenient to install and connect the drill body and drill shank. Utility Model Content

[0005] The purpose of this utility model is to provide a stepped drill with separable drill shank and drill body, in order to solve the problems mentioned in the background art, where the drill body and drill shank are not installed firmly and tightly when installed separately, and there is a lack of corresponding quick assembly structure during installation, making it inconvenient to connect the drill body and drill shank.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a step drill with a separable drill shank and drill body, comprising:

[0007] Step drill bit and drill body;

[0008] A quick-installation handle for a step drill bit is installed and connected to the inner side of the lower end of the drill body of the step drill bit.

[0009] An elastic extrusion mechanism is movably installed on the inner side of the upper end of the quick-mounting handle of the step drill.

[0010] An anti-positioning mechanism is installed and connected between the two ends of the quick-installation handle of the step drill, and the anti-positioning mechanism is located outside the elastic extrusion mechanism.

[0011] The step drill quick-install handle includes a step drill shank body. Assembly keyways are provided on both sides of the lower end of the step drill shank body. A step drill shank fixing plate is fixedly connected to the upper end of the step drill shank body. Assembly screws are installed on the inner circumference of the step drill shank fixing plate. An assembly sleeve is fixedly connected to the middle of the upper end of the step drill shank fixing plate. An elastic compression mechanism is movably installed in the middle of the interior of the assembly sleeve. A stop positioning mechanism is installed between the two ends of the assembly sleeve.

[0012] The elastic compression mechanism includes an abutment spring fixed to the bottom of the assembly sleeve rod, a T-shaped thin rod fixed to the upper end of the abutment spring, a compression head fixed to the upper end of the T-shaped thin rod, a compression sleeve rod fixed to the upper end of the compression head, and an abutment positioning mechanism installed on the outer side of the T-shaped thin rod on the assembly sleeve rod.

[0013] The contact positioning mechanism includes a T-shaped sleeve rod, with a positioning pin fixedly connected to the middle of the outer end of the T-shaped sleeve rod. A return spring is fixedly connected to the periphery of the positioning pin on the T-shaped sleeve rod, and the other end of the return spring is fixedly connected to the inner wall of the assembly sleeve rod.

[0014] The restoring spring, positioning pin, and T-shaped sleeve are sleeved on the assembly sleeve.

[0015] The T-shaped thin rod, the extruded round head, and the extruded sleeve are sleeved on the assembly sleeve.

[0016] The T-shaped sleeve has an inclined surface on the upper side of its inner end.

[0017] In summary, due to the adoption of the above-mentioned technologies, the beneficial effects of this utility model are:

[0018] 1. In this utility model, the top of the elastic extrusion mechanism can move downward when it is extruded by the step drill bit body. When the elastic extrusion mechanism is pressed down, it can extrude the contact positioning mechanism for contact positioning. When the contact positioning mechanism is exposed on the quick mounting handle of the step drill, it can effectively contact and position, thus effectively fixing the outer step drill bit body for placement.

[0019] 2. In this utility model, the quick-installation handle of the step drill is sleeved and connected to the inner side of the lower end of the step drill bit body. The quick-installation handle of the step drill and the step drill bit body are assembled by sleeve connection and then fixed by assembly screws, which makes the assembly more convenient. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a stepped drill with a separable drill shank and drill body according to the present invention.

[0021] Figure 2This is a schematic diagram of the cross-sectional assembly structure of a stepped drill with a separable drill shank and drill body according to the present invention.

[0022] Figure 3 This is a schematic diagram of the separation structure of a stepped drill with a separable drill shank and drill body according to the present invention.

[0023] Figure 4 This is a schematic diagram of the combined structure of a quick-installation shank, abutment positioning mechanism, and elastic extrusion mechanism for a step drill with a separable shank and drill body according to this utility model.

[0024] Figure 5 This is a cross-sectional structural diagram of the quick-installation shank, the contact positioning mechanism, and the elastic extrusion mechanism of a step drill with a separable drill shank and drill body according to this utility model.

[0025] Figure 6 for Figure 5 This utility model discloses an enlarged structural diagram of region A of a stepped drill with a separable drill shank and drill body.

[0026] In the diagram: 1. Step drill shank body; 11. Assembly keyway; 2. Step drill shank fixing plate; 21. Assembly screw; 3. Step drill bit body; 4. Assembly sleeve; 41. Return spring; 42. Positioning pin; 43. T-shaped sleeve; 5. Extrusion sleeve; 51. T-shaped thin rod; 52. Contact spring; 53. Extrusion round head. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0028] Example 1

[0029] Reference Figures 1-6 A stepped drill with a separable shank and drill body includes a stepped drill bit body 3, a stepped drill quick-install shank, an elastic compression mechanism, and an abutment positioning mechanism.

[0030] The quick-installation shank for the step drill bit is sleeved and connected to the inner side of the lower end of the drill body 3. The quick-installation shank and the drill body 3 are assembled by sleeve connection, making assembly more convenient. The elastic compression mechanism is movably installed on the inner side of the upper end of the quick-installation shank. When the quick-installation shank is installed, it can drive the elastic compression mechanism to perform corresponding sleeve assembly. The abutment positioning mechanism is installed and connected in the middle of both ends of the quick-installation shank. When the abutment positioning mechanism is exposed on the quick-installation shank, it can effectively abut and position itself. The abutment positioning mechanism is located outside the elastic compression mechanism. When the elastic compression mechanism is pressed down, it can squeeze the abutment positioning mechanism to be exposed for abutment positioning.

[0031] The quick-installation shank for a step drill includes a step drill shank body 1. Assembly keyways 11 are provided on both sides of the lower end of the step drill shank body 1. The step drill shank body 1 can be connected to external equipment via the assembly keyways 11. A step drill shank fixing plate 2 is fixedly connected to the upper end of the step drill shank body 1. The step drill shank body 1 can move the step drill shank fixing plate 2 to its position. Assembly screws 21 are installed on the inner circumference of the step drill shank fixing plate 2. The step drill shank fixing plate 2 can be assembled to the step drill bit body 3 using the assembly screws 21, thus facilitating assembly and fixation. An assembly sleeve 4 is fixedly connected to the upper middle of the step drill shank fixing plate 2. The assembly sleeve 4 can be assembled into the lower slot of the step drill bit body 3 through the upper end of the step drill shank fixing plate 2. The assembly sleeve 4 is movably installed in the middle of the inside of the assembly sleeve 4. The assembly sleeve 4 can move down to abut through the elastic compression mechanism. Abutment positioning mechanism is installed in the middle of both ends of the assembly sleeve 4. When the abutment positioning mechanism in the middle of both ends of the assembly sleeve 4 is exposed, the step drill bit body 3 on the periphery can be fixed and placed.

[0032] The contact positioning mechanism includes a T-shaped sleeve 43, with a positioning pin 42 fixedly connected to the middle of the outer end of the T-shaped sleeve 43. When the T-shaped sleeve 43 is subjected to internal compression, it can drive the positioning pin 42 to move outward. When the positioning pin 42 is exposed on the assembly sleeve 4, it can contact the outer stepped drill bit body 3, thus allowing the stepped drill bit body 3 to be placed stably. A return spring 41 is fixedly connected to the periphery of the positioning pin 42 on the T-shaped sleeve 43. When the return spring 41 is compressed by the outward movement of the T-shaped sleeve 43, it can deform. The other end of the return spring 41 is fixedly connected to the inner wall of the assembly sleeve 4, thus giving the return spring 41 a restoring elastic force. When the inner end of the T-shaped sleeve 43 is no longer compressed, the return spring 41 drives the T-shaped sleeve 43 and the positioning pin 42 to return to their original positions, preventing the positioning pin 42 from being exposed and causing contact positioning.

[0033] The return spring 41, the positioning pin 42 and the T-shaped sleeve 43 are fitted onto the assembly sleeve 4, so that they can be positioned and moved for use.

[0034] The inner end of the T-shaped sleeve 43 has a beveled surface, which facilitates contact and compression.

[0035] Working principle: During use, the quick-installation shank of the step drill bit is sleeved and connected to the lower inner side of the step drill bit body 3. The quick-installation shank and the step drill bit body 3 are assembled by sleeve connection and then fixed by assembly screws 21, making assembly more convenient. During installation, the quick-installation shank can drive the elastic compression mechanism to perform corresponding sleeve assembly. When the top of the elastic compression mechanism is squeezed by the step drill bit body 3, it can move downward. When the elastic compression mechanism is pressed down, it can squeeze the exposed anti-positioning mechanism for anti-positioning. When the anti-positioning mechanism is exposed on the quick-installation shank, it can effectively anti-position, thus effectively fixing the outer step drill bit body 3 for placement.

[0036] Example 2

[0037] Reference Figures 1-6 A stepped drill with a separable shank and drill body, in this embodiment compared to embodiment one, the elastic compression mechanism includes an abutment spring 52 fixedly attached to the bottom end of the assembly sleeve 4. The abutment spring 52 can be stably placed at the bottom end of the assembly sleeve 4. A T-shaped thin rod 51 is fixedly attached to the upper end of the abutment spring 52. When the abutment spring 52 is compressed by the T-shaped thin rod 51, it can deform. A compression head 53 is fixedly attached to the upper end of the T-shaped thin rod 51. The T-shaped thin rod 51 can receive the compression of the compression head 53 and move downward. The end is fixedly connected to the extrusion sleeve 5. The extrusion round head 53 can receive the extrusion of the extrusion sleeve 5 and press down. When the extrusion round head 53 contacts the T-shaped sleeve 43 of the abutment positioning mechanism, the T-shaped sleeve 43 can move outward. The outer side of the T-shaped thin rod 51 is mounted on the assembly sleeve 4 and the abutment positioning mechanism is installed. When the extrusion round head 53 moves down, it can drive the abutment positioning mechanism to move outward and expose for abutment. When the extrusion pressure at the upper end of the extrusion sleeve 5 disappears, the abutment spring 52 drives the whole to return to its original state, so that the extrusion round head 53 releases the extrusion on the T-shaped sleeve 43.

[0038] The T-shaped thin rod 51, the extruded round head 53, and the extruded sleeve 5 are fitted onto the assembly sleeve 4, which allows for positioning and movement.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A stepped drill with a separable shank and drill body, characterized in that, include: Step drill bit body (3); A quick-installation handle for a step drill bit is installed and connected to the inner side of the lower end of the drill bit body (3). An elastic extrusion mechanism is movably installed on the inner side of the upper end of the quick-mounting handle of the step drill. An anti-positioning mechanism is installed and connected between the two ends of the quick-installation handle of the step drill, and the anti-positioning mechanism is located outside the elastic extrusion mechanism.

2. A stepped drill with separable drill shank and drill body according to claim 1, characterized in that: The quick-installation handle for the step drill includes a step drill handle body (1). Assembly keyways (11) are provided on both sides of the lower end of the step drill handle body (1). A step drill handle fixing plate (2) is fixedly connected to the upper end of the step drill handle body (1). An assembly screw (21) is installed on the inner circumference of the step drill handle fixing plate (2). An assembly sleeve rod (4) is fixedly connected to the middle of the upper end of the step drill handle fixing plate (2). An elastic compression mechanism is movably installed in the middle of the interior of the assembly sleeve rod (4). An abutment positioning mechanism is installed in the middle of both ends of the assembly sleeve rod (4).

3. A stepped drill with separable drill shank and drill body according to claim 2, characterized in that: The elastic compression mechanism includes an abutment spring (52) fixed to the bottom of the assembly sleeve (4), a T-shaped thin rod (51) fixed to the upper end of the abutment spring (52), a compression round head (53) fixed to the upper end of the T-shaped thin rod (51), a compression sleeve (5) fixed to the upper end of the compression round head (53), and an abutment positioning mechanism installed on the outer side of the T-shaped thin rod (51) on the assembly sleeve (4).

4. A stepped drill with separable drill shank and drill body according to claim 2 or 3, characterized in that: The contact positioning mechanism includes a T-shaped sleeve (43), with a positioning pin (42) fixedly connected to the middle of the outer end of the T-shaped sleeve (43). A return spring (41) is fixedly connected to the periphery of the positioning pin (42) on the T-shaped sleeve (43), and the other end of the return spring (41) is fixedly connected to the inner wall of the assembly sleeve (4).

5. A stepped drill with separable drill shank and drill body according to claim 4, characterized in that: The return spring (41), positioning pin (42) and T-shaped sleeve (43) are sleeved on the assembly sleeve (4).

6. A stepped drill with separable drill shank and drill body according to claim 3, characterized in that: The T-shaped thin rod (51), the extruded round head (53) and the extruded sleeve (5) are sleeved on the assembly sleeve (4).

7. A stepped drill with separable drill shank and drill body according to claim 4, characterized in that: The upper inner end of the T-shaped sleeve (43) is provided with a bevel.

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