Long life alloy thread tap

Abstract

The utility model discloses a long -life alloy screw thread tap belongs to tap technical field, including: tap body, it includes integral blade part and handle, and handle top surface is concave and is formed with at least two vertical holes along the axial direction of tap body, the fixed column of adaptable place inside vertical hole, and its rigidity and strength are greater than tap body, and the detachable connection of handle top end fixed seat is set up with fixed rod on it, and the number of fixed rod is equal with vertical hole, can insert vertical hole, and the concave of fixed seat top surface forms has connecting recess. The utility model opens vertical hole in the inside of tap body, and the fixed column of higher rigidity and strength is cooperated in vertical hole, thereby improves the torsional rigidity of tap body, to reduce the probability of tap fracture when working, prolongs the service life of tap body.

Description

Technical Field

[0001] This utility model relates to the field of tap technology, specifically to a long-life alloy thread tap. Background Technology

[0002] In the fields of mechanical manufacturing and precision machining, threaded connections are among the most widely used connection methods due to their advantages such as detachability, reliable connection, and ease of machining. As the core tool for machining internal threads, the performance of the tap directly determines the accuracy, efficiency, and cost of thread machining. Existing alloy thread taps still commonly suffer from the technical pain point of being prone to breakage during practical use. This not only leads to tap scrapping and increases tool replacement costs but also reduces production efficiency due to frequent tap replacements. Furthermore, when a tap breaks, the broken segment inside the tapping hole is often difficult to remove. Therefore, this utility model provides a long-life alloy thread tap. Utility Model Content

[0003] The purpose of this invention is to provide a long-life alloy thread tap.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: A long-life alloy thread tap includes: a tap body, which includes an integral cutting edge and a shank, wherein the top surface of the shank is recessed downward to form at least two vertical holes along the axial direction of the tap body, and the vertical holes extend to the bottom of the cutting edge; The fixing post can be adapted to be placed inside the vertical hole, and its rigidity and strength are greater than those of the tap body; A fixing base is detachably connected to the top of the handle, and a fixing rod is provided thereon. The number of fixing rods is equal to the number of vertical holes, and they can be inserted into the vertical holes. When the fixing rod is fully inserted into the vertical hole, its bottom end abuts against the top of the fixing post, thereby fixing the fixing post. The top surface of the fixed base is recessed to form a connecting groove.

[0005] Based on the above scheme and as a preferred embodiment of the above scheme, the vertical holes are evenly distributed around the axis of the tap body.

[0006] Based on the above scheme and as a preferred embodiment of the above scheme, the number of vertical holes is four.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme, the top edge of the handle is provided with a limiting protrusion to form a slot structure; the bottom of the fixing seat is provided with a connecting protrusion adapted to the slot structure; the fixing rod is connected to the connecting protrusion.

[0008] Based on the above solution and as a preferred embodiment of the above solution, the limiting protrusion is provided with a through hole, and the connecting protrusion is provided with a screw hole corresponding to the through hole. The fixing seat and the handle are detachably fixedly connected by screws that cooperate with the through hole and the screw hole.

[0009] Compared with the prior art, this utility model has the following advantages and beneficial effects: A vertical hole is provided inside the tap body, and a fixing post with higher rigidity and strength is fitted inside the vertical hole, thereby improving the torsional resistance of the tap body, reducing the probability of tap breakage during operation, and extending the service life of the tap body. Simultaneously, a fixing seat with a fixing rod is detachably connected to the top of the tap body. When the tap breaks, the fixing seat can be removed, the fixing rod inserted into the vertical hole, and a tool engaging with the connecting groove on the top surface of the fixing seat can rotate the broken tap, facilitating the removal of the broken tap fragments inside the hole. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 This is a top view of the present invention.

[0012] Figure 3 for Figure 2 Sectional view at point CC.

[0013] Figure 4 This is an exploded view of the structure of this utility model.

[0014] Figure 5 This is a top view of part of the structure of this utility model.

[0015] In the diagram: 1. Blade; 2. Handle; 4. Vertical hole; 5. Fixing post; 6. Fixing base; 7. Fixing rod; 8. Connecting groove; 9. Limiting protrusion; 10. Connecting protrusion; 11. Screw. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0017] like Figures 1 to 3 As shown, a long-life alloy thread tap includes: a tap body, a fixing post 5, and a fixing seat 6.

[0018] The tap body includes an integral cutting edge 1 and a shank 2. At least two vertical holes 4 are recessed downward from the top surface of the shank 2 along the axial direction of the tap body. The vertical holes 4 extend to the bottom of the cutting edge 1 and do not penetrate the tap body.

[0019] Preferably, such as Figure 5 As shown, the vertical holes 4 are evenly distributed around the axis of the tap body. In this embodiment, there are four vertical holes 4, and their cross-sections are circular.

[0020] The fixing post 5 can be fitted inside the vertical hole 4, and its rigidity and strength are greater than those of the tap body. The fixing post 5, fitting inside the vertical hole 4, improves the tap's torsional resistance due to its greater rigidity and strength compared to the tap body. High-strength and high-rigidity materials are more expensive; using only the fixing post 5 as a high-strength, high-rigidity material reduces the tap's cost. The tap body is made of high-speed steel, powder metallurgy high-speed steel, or solid cemented carbide, while the fixing post 5 is made of alloy structural steel, ultra-high-strength steel, or precipitation-hardening stainless steel. In this embodiment, the tap body is made of powder metallurgy high-speed steel, and the fixing post 5 is made of 42CrMo alloy steel.

[0021] like Figure 4 As shown, the fixing base 6 is detachably connected to the top of the handle 2, and a fixing rod 7 is provided on it. The number of fixing rods 7 is equal to the number of vertical holes 4, and they can be inserted into the vertical holes 4. When the fixing rod 7 is fully inserted into the vertical hole 4, its bottom end abuts against the top end of the fixing post 5, thereby fixing the fixing post 5. The bottom end of the fixing post 5 abuts against the bottom end of the vertical hole 4, and its top end is held in place by the bottom end of the fixing rod 7, thereby fixing its position.

[0022] Preferably, the top edge of the handle 2 is provided with a limiting protrusion 9 to form a slot structure. The bottom of the fixing base 6 is provided with a connecting protrusion 10 that matches the slot structure, so as to insert into the handle 2 and improve the stability of the connection. The fixing rod 7 is connected to the connecting protrusion 10.

[0023] Meanwhile, a through hole is provided on the limiting protrusion 9, and a screw hole is provided on the connecting protrusion 10 corresponding to the through hole. The fixing seat 6 and the handle 2 are detachably fixed by screws 11 that fit into the through hole and the screw hole. The shank of the screw 11 passes through the through hole and engages with the threaded screw hole, connecting the fixing seat 6 to the top of the handle 2. The structure is simple and the connection is convenient.

[0024] The top surface of the mounting base 6 has a recessed connecting groove 8 for connecting with rotating tools such as screwdrivers.

[0025] When the tap body breaks, pull out the retaining post 5, remove the retaining seat 6, insert the retaining rod 7 on the retaining seat 6 into the vertical hole 4 of the broken tap body fragment inside the hole, and then connect the tool to the retaining seat 6. The tool will then rotate the retaining seat 6 and the broken tap body fragment, causing the tap body fragment to unscrew the tapping hole. Furthermore, the retaining post 5 and the retaining seat 6 can be reused, reducing the cost of the tap.

[0026] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A long-life alloy thread tap, characterized in that, include: The tap body includes an integral cutting edge (1) and a shank (2), wherein the top surface of the shank (2) is recessed downward to form at least two vertical holes (4) along the axial direction of the tap body, and the vertical holes (4) extend to the bottom of the cutting edge (1). The fixing post (5) can be adapted to be placed inside the vertical hole (4), and its rigidity and strength are greater than those of the tap body; The fixing base (6) is detachably connected to the top of the handle (2), and a fixing rod (7) is provided on it. The number of fixing rods (7) is equal to that of the vertical hole (4), and they can be inserted into the vertical hole (4). When the fixing rod (7) is fully inserted into the vertical hole (4), its bottom end abuts against the top of the fixing post (5), thereby fixing the fixing post (5). The top surface of the fixing seat (6) has a concave connecting groove (8).

2. The long-life alloy thread tap according to claim 1, characterized in that, The vertical holes (4) are evenly distributed around the axis of the tap body.

3. The long-life alloy thread tap according to claim 1, characterized in that, The number of vertical holes (4) is four.

4. The long-life alloy thread tap according to claim 1, characterized in that, The top edge of the handle (2) is provided with a limiting protrusion (9) to form a slot structure; the bottom of the fixing seat (6) is provided with a connecting protrusion (10) that is adapted to the slot structure; the fixing rod (7) is connected to the connecting protrusion (10).

5. A long-life alloy thread tap according to claim 4, characterized in that, The limiting protrusion (9) has a through hole, and the connecting protrusion (10) has a screw hole corresponding to the through hole. The fixing seat (6) and the handle (2) are detachably fixedly connected by screws (11) that fit in the through hole and the screw hole.

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