Hard alloy stepped thread cutter drill

Abstract

The utility model belongs to the technical field of stepped thread cutters, particularly relates to a hard alloy stepped thread cutter drill, and aims to solve the problem that an existing cutter rod cannot be replaced, and adopts the following scheme that the hard alloy stepped thread cutter drill comprises a connecting rod, a stepped main cutter rod is fixed below the connecting rod, and a connecting mechanism is arranged at the bottom end of the stepped main cutter rod; the connecting mechanism comprises a stepped secondary cutter rod, the stepped secondary cutter rod is arranged below the stepped primary cutter rod, and the stepped secondary cutter rod is welded with the fixing rod, slides in the stepped primary cutter rod along the sliding groove and the transverse groove, is inserted into the connecting rod through the corresponding hole and penetrates through the through hole of the limiting rod at the same time. And the stepped main tool rod and the stepped secondary tool rod can be limited and can be conveniently and rapidly spliced, the stepped tool rods with different inner diameters or lengths can be replaced, and the situation that the stepped threaded tool is too fixed and poor in applicability is avoided.

Description

Technical Field

[0001] The utility model relates to a step thread tool, in particular to a hard alloy step thread tool drill, belonging to the technical field of step thread tools. Background Art

[0002] At present, in some cavity-type processing parts, stepped holes are also a relatively common composite hole (stepped hole) structure. This structure is widely used, and the inner diameters of the various step surfaces of the stepped holes are different, so corresponding thread tool drills are required for processing.

[0003] In the prior art, a carbide step thread tool drill disclosed in announcement number CN213288815U is provided with a clamping strip group on the outer wall surface of the rear clamping shank, and the clamping strip group matches the number of gaps of the umbrella tooth clamping block of the drill chuck body. When the drill chuck clamps the rear clamping shank of the thread tool drill body, the four gaps of the umbrella tooth clamping block of the drill chuck are tightly clamped with the four clamping ridges. At the same time, the multiple groups of symmetrical rectangular strip-shaped damping and anti-slip protrusions will be tightly pressed and fitted with the inner wall surface of each umbrella tooth clamping block through damping friction, which greatly improves the stability of the clamping between the thread tool drill body and the drill chuck body.

[0004] However, in the implementation of relevant technologies, it was found that the carbide step thread tool drill designed above has the following problems: in the prior art, the tool is stably connected to the power end or the fixture through the cooperation of components such as the clamping tool handle. However, during use, since the step thread tool is divided into two groups of tool rods with different inner diameters, the connection method is fixed, and the corresponding hole depths of the lower tool may be inconsistent during the drilling process, while the length of the lower tool rod is uniform, resulting in poor applicability. In view of this, a carbide step thread tool drill is provided to overcome the above defects. Utility Model Content

[0005] The utility model provides a carbide stepped thread tool drill to solve the problem that the corresponding hole depths of the lower tools may be inconsistent during the above-mentioned drilling process, while the length of the lower tool rods is uniform, resulting in poor applicability.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions: a carbide stepped thread tool drill, comprising a connecting rod, a stepped main tool rod is fixed below the connecting rod, and a connecting mechanism is provided at the bottom end of the stepped main tool rod;

[0007] The connecting mechanism includes a stepped secondary tool rod, which is arranged below the stepped main tool rod, and a fixing rod is fixed to the top of the stepped secondary tool rod corresponding to the inside of the stepped main tool rod, a limiting rod is passed through the inner wall of the fixing rod, a sliding groove is provided on the inner wall of the stepped main tool rod corresponding to the position of the limiting rod, and a transverse groove is connected to the top of the sliding groove, a corresponding hole is provided on the inner wall of the transverse groove, and a connecting rod is passed through the inside of the corresponding hole, and a through hole is provided on the limiting rod corresponding to the position of the connecting rod.

[0008] As a further solution of the present invention: the limiting rod and the fixing rod are perpendicular to each other, and the limiting rod forms a sliding structure with the stepped main tool rod through the sliding groove.

[0009] As a further solution of the present invention: the connecting rod passes through the corresponding hole to the inside of the transverse groove, and the transverse groove and the sliding groove are connected.

[0010] As a further solution of the present invention: a cooling mechanism is provided on one side of the connecting rod, and the cooling mechanism includes a connecting tube, which is sleeved on one end of the connecting rod passing through the connecting rod, and a fixing block is embedded in the axial end of the connecting tube, a drip irrigation pipe passes through the top end of the fixing block, and the top end of the drip irrigation pipe is connected to a liquid bottle.

[0011] As a further solution of the present invention: the cooling mechanism further includes a placement groove, the placement groove is opened at the bottom end of the through hole, and a spray hole is opened on the outer wall of the connecting rod at a position corresponding to the placement groove.

[0012] As a further solution of the present invention: the connecting rod is threadedly connected to the connecting tube, and the connecting tube is threadedly connected to the drip irrigation pipe.

[0013] As a further solution of the present invention: a flow hole is opened on the outer wall of the stepped main tool rod, and a threaded cover is sleeved on the end of the connecting rod away from the connecting cylinder.

[0014] The beneficial effects of the utility model are as follows: the fixed rod is welded to the stepped secondary tool rod, which slides along the slide groove and the transverse groove inside the stepped main tool rod and is inserted into the connecting rod through the corresponding hole, while passing through the through hole of the limiting rod, so that the stepped main tool rod and the stepped secondary tool rod can be limited and quickly assembled, and stepped secondary tool rods with different inner diameters or lengths can be replaced, thereby avoiding the poor applicability of the stepped thread tool being too fixed;

[0015] The connecting tube and the threaded cover are threadedly connected on both sides of the connecting rod for fixing and limiting while facilitating disassembly and assembly. The connecting rod has a hollow structure, which allows the connecting tube to introduce coolant through the drip irrigation pipe and the liquid bottle, and spray it out through the placement groove and the spray hole, allowing the coolant to circulate inside the stepped main tool rod and flow out through the circulation hole, which can have a cooling effect during the tool processing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the utility model;

[0019] Figure 4 For this utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 5 This is a schematic diagram of the structure of the utility model.

[0021] In the figure: 1. Connecting rod; 2. Stepped main tool rod; 3. Connecting mechanism; 301. Stepped secondary tool rod; 302. Fixing rod; 303. Limiting rod; 304. Slide groove; 305. Horizontal groove; 306. Corresponding hole; 307. Through hole; 308. Connecting rod; 4. Cooling mechanism; 401. Connecting cylinder; 402. Fixing block; 403. Drip irrigation pipe; 404. Liquid bottle; 405. Placement groove; 406. Spraying hole; 5. Threaded cap; 7. Circulation hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0023] like Figures 1 to 4As shown, a carbide step thread tool drill comprises a connecting rod 1, a step main tool rod 2 is fixed below the connecting rod 1, and a connecting mechanism 3 is provided at the bottom end of the step main tool rod 2; the connecting mechanism 3 comprises a step secondary tool rod 301, the step secondary tool rod 301 is arranged below the step main tool rod 2, a fixing rod 302 is fixed to the top of the step secondary tool rod 301 corresponding to the inside of the step main tool rod 2, a limiting rod 303 is passed through the inner wall of the fixing rod 302, a sliding groove 304 is provided on the inner wall of the step main tool rod 2 corresponding to the position of the limiting rod 303, a transverse groove 305 is connected to the top of the sliding groove 304, a corresponding hole 306 is provided on the inner wall of the transverse groove 305, a connecting rod 308 is passed through the inside of the corresponding hole 306, and the limiting rod 303 corresponds to the position of the connecting rod 308 The fixing rod 308 is welded to the stepping secondary tool rod 301, and slides along the slide groove 304 and the transverse groove 305, and the transverse groove 305 is communicated with the slide groove 304; the fixing rod 302 is welded to the stepping secondary tool rod 301, and slides along the slide groove 304 and the transverse groove 305 inside the stepping primary tool rod 2, and inserts the connecting rod 308 through the corresponding hole 306, and at the same time passes through the through hole 307 of the limiting rod 303, which can limit the stepping primary tool rod 2 and the stepping secondary tool rod 301 and facilitate quick assembly. The stepping secondary tool rod 301 with different inner diameters or lengths can be replaced to avoid the step thread tool being too fixed and having poor applicability. Example 2

[0024] In addition to all the technical features of the first embodiment, the present embodiment further includes: a cooling mechanism 4 is provided on one side of the connecting rod 1, the cooling mechanism 4 includes a connecting cylinder 401, the connecting cylinder 401 is sleeved on the end of the connecting rod 308 passing through the connecting rod 1, the axial end of the connecting cylinder 401 is embedded with a fixing block 402, the top of the fixing block 402 passes through a drip irrigation pipe 403, the top of the drip irrigation pipe 403 is connected to a liquid bottle 404, the cooling mechanism 4 also includes a placement groove 405, the placement groove 405 is provided at the bottom end of the through hole 307, the outer wall of the connecting rod 308 is provided with a spray hole 406 at a position corresponding to the placement groove 405, and the connecting rod 308 and the connecting rod 308 are connected. The tube 401 is threadedly connected, and the connecting tube 401 is threadedly connected to the drip irrigation pipe 403. A circulation hole 7 is opened on the outer wall of the stepped main tool rod 2, and a threaded cover 5 is provided on the end of the connecting rod 308 away from the connecting tube 401; the connecting tube 401 and the threaded cover 5 are threadedly connected on both sides of the connecting rod 308 for fixing and limiting while facilitating disassembly and assembly. The connecting rod 308 is a hollow structure, which allows the connecting tube 401 to introduce coolant through the drip irrigation pipe 403 and the liquid bottle 404, and spray it out through the placement groove 405 and the spray hole 406, so that the coolant can circulate inside the stepped main tool rod 2 and flow out through the circulation hole 7, which can have a cooling effect during the tool processing process.

[0025] Working principle: the connecting rod 1 is connected to the power end or the clamp, the fixing rod 302 welded to the stepped tool rod 301 is connected inside the stepped main tool rod 2 through the limiting rod 303 along the slide groove 304, although it slides into the transverse groove 305, and is inserted into the connecting rod 308 through the corresponding hole 306, and then penetrates the limiting rod 303 through the through hole 307 to limit the stepped tool rod 301, so that it can be quickly disassembled and replaced, avoiding being too fixed and difficult to replace, and improving applicability. Then, one end of the connecting rod 308 is threadedly connected to the connecting tube 401, and the other end is threadedly connected to the threaded cover 5 for fixation and convenient disassembly. The connecting tube 401 is threadedly connected to the drip irrigation pipe 403 through the fixing block 402, so that the coolant inside the liquid bottle 404 flows in the form of water droplets and is sprayed out through the spray hole 406. The placement groove 405 opened by the limiting rod 303 facilitates the circulation of coolant, and it is sprayed through the circulation hole 7 to achieve a cooling effect in the working state.

[0026] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0027] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A carbide step thread tool drill, comprising a connecting rod (1), characterized in that: A stepped main tool rod (2) is fixed below the connecting rod (1), and a connecting mechanism (3) is provided at the bottom end of the stepped main tool rod (2); The connection mechanism (3) comprises a stepped secondary tool rod (301), the stepped secondary tool rod (301) is arranged below the stepped main tool rod (2), and a fixing rod (302) is fixed inside the stepped main tool rod (2) at the top end of the stepped secondary tool rod (301), a limiting rod (303) is passed through the inner wall of the fixing rod (302), a sliding groove (304) is provided at a position corresponding to the limiting rod (303) on the inner wall of the stepped main tool rod (2), and a transverse groove (305) is connected to the top end of the sliding groove (304), a corresponding hole (306) is provided on the inner wall of the transverse groove (305), and a connection rod (308) is passed through the inside of the corresponding hole (306), and a through hole (307) is provided at a position corresponding to the connection rod (308) on the limiting rod (303).

2. The carbide step thread drill according to claim 1, characterized in that: The limiting rod (303) and the fixing rod (302) are perpendicular to each other, and the limiting rod (303) forms a sliding structure with the stepped main tool rod (2) through the sliding groove (304).

3. The carbide step thread drill according to claim 1, characterized in that: The connecting rod (308) passes through the corresponding hole (306) to the interior of the transverse groove (305), and the transverse groove (305) and the sliding groove (304) are in communication.

4. The carbide step thread drill according to claim 1, characterized in that: A cooling mechanism (4) is provided on one side of the connecting rod (1), and the cooling mechanism (4) includes a connecting tube (401). The connecting tube (401) is sleeved on one end of the connecting rod (308) passing through the connecting rod (1), and a fixing block (402) is embedded in the axial end of the connecting tube (401). A drip irrigation pipe (403) passes through the top end of the fixing block (402), and the top end of the drip irrigation pipe (403) is connected to a liquid bottle (404).

5. The carbide step thread drill according to claim 4, characterized in that: The cooling mechanism (4) further comprises a placement groove (405), wherein the placement groove (405) is provided at the bottom end of the through hole (307), and a spray hole (406) is provided on the outer wall of the connecting rod (308) at a position corresponding to the placement groove (405).

6. The carbide step thread drill according to claim 4, characterized in that: The connecting rod (308) is threadedly connected to the connecting cylinder (401), and the connecting cylinder (401) is threadedly connected to the drip irrigation pipe (403).

7. The carbide step thread drill according to claim 1, characterized in that: A flow hole (7) is provided on the outer wall of the stepped main tool rod (2), and a threaded cover (5) is sleeved on one end of the connecting rod (308) away from the connecting cylinder (401).

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