Hub drilling tool

Abstract

The utility model discloses a hub drilling tool, relates to the field of drilling tools, and solves the problem that waste is caused due to the fact that a drill rod and a drill handle which are small in abrasion need to be synchronously replaced when a new drilling tool needs to be replaced, the hub drilling tool comprises a drill bit, the drill rod is arranged at the bottom of the drill bit, and the drill handle is arranged at the bottom of the drill rod. A combined assembly is arranged in the drill bit, the drill rod and the drill handle, the combined assembly comprises a connecting rod, and the connecting rod is fixedly installed at the bottom of the drill bit; by rotating the drill handle and rotating the drill handle, the screw can be screwed out of the screw hole, the drill bit is communicated with the connecting rod to be synchronously pulled out of the center groove after being screwed out, then the drill bit can be detached, a new drill bit is inserted into the center groove again through the connecting rod after being detached, the screw is screwed into the screw hole again after being inserted, and replacement of the drill bit can be completed; therefore, only the drill bit needs to be replaced when the drilling tool is replaced, and the use cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling tools, in particular to a hub drilling tool. Background Art

[0002] Drilling tools are commonly used in machining, used to drill holes in workpieces. They usually consist of three parts: a drill bit, a drill rod, and a drill shank. The drill bit is the cutting part, used to cut the workpiece material; the drill rod is the part that connects the drill bit and the drill shank, used to transmit cutting force and coolant; the drill shank is the part that connects to the machine tool spindle, used to fix and transmit the drill bit.

[0003] When processing the wheel hub, a drilling tool is required to drill holes in the wheel hub. When the drilling tool is in use, due to the continuous friction between the drill bit and the wheel hub, the drill bit wears much more than the drill shank and drill rod. When the drill bit is worn to a certain extent, a new drilling tool needs to be replaced. However, at this time, the drill shank and drill rod are less worn, and simultaneous replacement will result in a waste. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the problems existing in the above-mentioned prior art, the utility model provides a wheel hub drilling tool to solve the above-mentioned problems.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a hub drilling tool, comprising a drill bit, a drill rod is provided at the bottom of the drill bit, a drill shank is provided at the bottom of the drill rod, and a combined component is provided inside the drill bit, the drill rod and the drill shank;

[0008] The combined assembly includes a connecting rod, which is fixedly installed at the bottom of the drill bit. A screw is fixedly installed at the bottom of the connecting rod. A screw hole is opened on the inner side of the top of the drill handle. The screw is screwed into the screw hole. A center groove is opened inside the drill rod, and the connecting rod is inserted into the center groove.

[0009] As a preferred solution of the wheel hub drilling tool of the utility model, the connecting rod and the center groove have square cross-sections and the same size, the length of the connecting rod is the same as the depth of the center groove, and the bottom of the drill bit fits with the top of the drill rod.

[0010] As a preferred solution of the wheel hub drilling tool of the utility model, the top of the drill shank fits with the bottom of the drill rod, and the bottom of the connecting rod is flush with the top of the drill shank.

[0011] As a preferred solution of the hub drilling tool of the utility model, the side wall of the drill bit is provided with a first discharge groove, the side wall of the drill rod is provided with a second discharge groove, and the first discharge groove and the second discharge groove are connected to each other.

[0012] (III) Beneficial effects

[0013] The utility model provides a wheel hub drilling tool. It has the following beneficial effects:

[0014] By rotating the drill shank, the screw rod can be screwed out of the screw hole. After screwing it out, the drill bit connecting connecting rod can be simultaneously pulled out from the center groove to disassemble the drill bit. After disassembly, a new drill bit can be reinserted into the center groove through the connecting rod. After insertion, the screw rod can be screwed back into the screw hole to complete the replacement of the drill bit. Therefore, when replacing the drilling tool, only the drill bit needs to be replaced, thereby greatly reducing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a structural stereogram of the entire utility model.

[0017] Figure 2 It is a disassembled stereoscopic diagram of the overall structure of the utility model.

[0018] Figure 3 It is a cross-sectional view of the internal structure of the utility model.

[0019] Figure 4 It is the front view of the utility model.

[0020] In the figure, 1, drill bit; 2, drill rod; 3, drill shank; 4, first discharge trough; 5, second discharge trough; 6, combined component; 61, connecting rod; 62, screw rod; 63, screw hole; 64, center groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] Example 1

[0023] Reference Figure 1-Figure 4, which is the first embodiment of the utility model, and provides a hub drilling tool, comprising a drill bit 1, a drill rod 2 is provided at the bottom of the drill bit 1, a drill shank 3 is provided at the bottom of the drill rod 2, and a combination component 6 is provided inside the drill bit 1, the drill rod 2 and the drill shank 3;

[0024] The combination component 6 includes a connecting rod 61, which is fixedly installed at the bottom of the drill bit 1. A screw 62 is fixedly installed at the bottom of the connecting rod 61. A screw hole 63 is opened on the inner side of the top of the drill shank 3. The screw 62 is screwed into the screw hole 63. A center groove 64 is opened inside the drill rod 2, and the connecting rod 61 is inserted into the center groove 64.

[0025] In an optional embodiment: the connecting rod 61 and the center groove 64 are both square in cross-section and of the same size, the length of the connecting rod 61 is the same as the depth of the center groove 64, and the bottom of the drill bit 1 fits with the top of the drill rod 2.

[0026] It should be noted that the drill rod 2 and the drill bit 1 are connected together by inserting the connecting rod 61 into the central groove 64, and the connecting rod 61 with a square cross-section and the central groove 64 ensure that the inner connecting rod 61 rotates synchronously with the outer drill rod 2 when rotating.

[0027] In an optional embodiment, the top of the drill shank 3 fits with the bottom of the drill rod 2 , and the bottom of the connecting rod 61 is flush with the top of the drill shank 3 .

[0028] It should be noted that the drill shank 3 and the drill rod 2 can be connected together by screwing the screw 62 into the screw hole 63, so that the drill bit 1, the drill rod 2 and the drill shank 3 can be connected together as a whole, and the whole will generate a reverse force when drilling, and the direction of the force is the same as the tightening direction of the set screw 62. This setting can ensure that the reaction force generated during drilling will not loosen the screw 62, thereby ensuring the overall stability.

[0029] In an optional embodiment: a first discharge groove 4 is formed on the side wall of the drill bit 1 , a second discharge groove 5 is formed on the side wall of the drill rod 2 , and the first discharge groove 4 and the second discharge groove 5 are connected to each other.

[0030] It should be noted that the first discharge chute 4 and the second discharge chute 5 are connected and cooperate with each other to discharge the debris generated during drilling out of the hole.

[0031] Working principle: when the drill bit 1 is worn and needs to be replaced, the drill shank 3 is rotated. The drill shank 3 rotates and the screw rod 62 can be screwed out from the screw hole 63. After screwing it out, the drill bit 1 connected to the connecting rod 61 is simultaneously pulled out from the center groove 64 to disassemble the drill bit 1. After disassembly, the new drill bit 1 is reinserted into the center groove 64 through the connecting rod 61. After insertion, the screw rod 62 is re-screwed into the screw hole 63 to complete the replacement of the drill bit 1. Therefore, when replacing the drilling tool, only the drill bit 1 needs to be replaced, thereby greatly reducing the cost of use.

[0032] The drill bit 1 and the connecting rod 61 are integrally formed to ensure the stability of the connection between the connecting rod 61 and the drill bit 1 .

[0033] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A wheel hub drilling tool, comprising a drill bit (1), Features: A drill rod (2) is arranged at the bottom of the drill bit (1), a drill shank (3) is arranged at the bottom of the drill rod (2), and a combined component (6) is arranged inside the drill bit (1), the drill rod (2) and the drill shank (3); The combined component (6) comprises a connecting rod (61), wherein the connecting rod (61) is fixedly mounted on the bottom of the drill bit (1), a screw rod (62) is fixedly mounted on the bottom of the connecting rod (61), a screw hole (63) is provided on the inner side of the top of the drill shank (3), the screw rod (62) is screwed into the screw hole (63), a central groove (64) is provided inside the drill rod (2), and the connecting rod (61) is inserted into the central groove (64).

2. A wheel hub drilling tool according to claim 1, Features: The connecting rod (61) and the central groove (64) are both square in cross-section and of the same size; the length of the connecting rod (61) is the same as the depth of the central groove (64); and the bottom of the drill bit (1) fits in with the top of the drill rod (2).

3. A wheel hub drilling tool according to claim 1, Features: The top of the drill shank (3) fits the bottom of the drill rod (2), and the bottom of the connecting rod (61) is flush with the top of the drill shank (3).

4. A wheel hub drilling tool according to claim 1, Features: The side wall of the drill bit (1) is provided with a first material discharge groove (4), the side wall of the drill rod (2) is provided with a second material discharge groove (5), and the first material discharge groove (4) and the second material discharge groove (5) are connected to each other.

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