A type of die tapping tool

Abstract

A tapping fixture includes a deep groove ball bearing, a guide seat, a die set, a round die, a set screw, a guide rod, and a material set. The guide seat has mounting holes at both axial ends, which are interconnected to allow a round steel material to pass through. One mounting hole (I) accommodates the deep groove ball bearing, and a retaining ring axially limits its movement. The material set is nested within the inner ring of the deep groove ball bearing. The other mounting hole (II) accommodates the die set. A second locating screw hole is also provided radially on the guide seat. One end of the guide rod is screwed into the second locating screw hole, ensuring its other end aligns with the machine tool guide rail. After adjustment, a nut is tightened to secure it. This invention enhances machining stability and improves tapping performance by incorporating the material set, die set, and round die within the guide seat, and by using a guide rod externally.

Description

Technical Field

[0001] This utility model relates to the field of thread processing technology, specifically to a die tapping tool. Background Technology

[0002] Threading, a key process in mechanical manufacturing, is mainly used to create precise internal and external thread structures on the surface of workpieces to achieve functions such as fastening, sealing, or transmission. Common machining techniques include turning, milling, rolling and extrusion, tapping and threading, and grinding.

[0003] When tapping with a die, manually using the die makes it difficult to ensure the thread axis is perpendicular to the workpiece axis (perpendicularity). Uneven force can also lead to incomplete thread profiles and broken threads, easily causing die damage or workpiece scrap. In existing processes for machining round steel, the die is prone to wobbling, resulting in irregular thread initiation and misalignment between the tapped thread and the round steel, leading to thread eccentricity. If the outer diameter of the workpiece is too large, it increases the lateral pressure on the die; if it is too small, the engagement is unstable, both resulting in thread cross-threading and eccentricity. These operations require high operator skill and lead to low tapping efficiency. Therefore, this utility model designs a die tapping fixture to solve the above problems, which is of practical significance. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the purpose of this invention is to provide a die tapping fixture to solve the technical problem of insufficient processing stability affecting the die tapping effect.

[0005] This utility model is achieved through the following technical solution:

[0006] A tapping fixture includes a deep groove ball bearing, a guide seat, a die set, a round die, a set screw, a guide rod, and a material set. The guide seat has mounting holes at both axial ends, which are interconnected to allow a round steel material to pass through. One mounting hole (I) houses the deep groove ball bearing, and a retaining ring axially limits its movement. The material set is nested within the inner ring of the deep groove ball bearing. The other mounting hole (II) houses the die set, which also has a locating screw hole (I). The round die is nested within the inner ring of the die set, and the inner ring of the round die has teeth. The center lines of the locating screw hole (I) coincide with the locating hole (I) on the die set and the locating hole (II) on the round die. After alignment, a set screw and a nut are screwed in to secure them. The guide seat also has a locating screw hole (II) on its radial side. One end of the guide rod is screwed into the locating screw hole (II), so that its other end fits against the machine tool guide rail. After adjustment, a nut is tightened to secure it.

[0007] Preferably, the inner ring of the round die has five teeth evenly distributed on the same circumference, and a circular cutting edge is formed between each tooth.

[0008] Compared with the prior art, the beneficial effects of this utility model are:

[0009] 1. This utility model enhances machining stability and improves the tapping effect of the die by designing a material set, a die set, and a round die to be used in conjunction within the guide seat, and by using a guide rod outside the guide seat. The material set stabilizes the round steel workpiece to be machined, the die set stabilizes the round die, and the guide rod constrains the round steel from radial displacement. All of the above components play a role in eliminating the influence of shaking and enhancing machining stability.

[0010] 2. This utility model adopts a material matching and die matching design, which can adapt to round steel materials of different diameters by changing the material matching, die matching, and round die, thereby improving the versatility of the tooling. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of the tapping tool of this utility model;

[0013] Figure 2 This is an enlarged view of the tapping tool of this utility model;

[0014] Figure 3 This is a cross-sectional view of the guide seat of this utility model;

[0015] Figure 4 A cross-sectional view of the die fitting for this utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the circular plate tooth of this utility model;

[0017] Figure 6 This is a schematic diagram of the structure of the guide rod of this utility model;

[0018] Figure 7 A cross-sectional view of the material used in this utility model.

[0019] Among them, the deep groove ball bearing 1, guide seat 2, positioning screw hole 1 201, positioning screw hole 2 202, die fitting 3, positioning hole 1 301, round die 4, positioning hole 2 401, toothed edge 402, round cutting edge 403, set screw 5, guide rod 6, retaining ring 7, material fitting 8, material round steel 9, machine tool guide rail 10, and machine tool spindle 11. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0022] Figure 1-7 A tapping fixture is shown, comprising a deep groove ball bearing 1, a guide seat 2, a die fitting 3, a round die 4, a set screw 5, a guide rod 6, and a material fitting 8. The design concept is to enhance the stability of the tapping operation on the round steel material 9 by using the material fitting 8, the die fitting 3, and the round die 4 in conjunction with the guide seat 2, and by using the guide rod 6 as an auxiliary outside the guide seat 2.

[0023] Combination Figure 2 and Figure 3 Mounting holes are constructed at both ends of the guide seat 2, and the two mounting holes are interconnected to allow the material round steel 9 to pass through. One mounting hole I is used to insert a deep groove ball bearing 1, and a retaining ring 7 is used to axially limit the deep groove ball bearing 1. The material fitting 8 is nested in the inner ring of the deep groove ball bearing 1. The other mounting hole II is used to insert a die fitting 3, and the other mounting hole II is also constructed with a positioning screw hole 201. The center lines of the positioning screw hole 201, the positioning hole 301 provided on the die fitting 3, and the positioning hole 401 provided on the round die 4 are aligned. After the three are aligned, the set screw 5 and the nut are screwed in to fix them together, thus completing the installation of the relevant components in the guide seat 2.

[0024] After the above installation is completed, the round die 4 is nested in the inner ring of the die set 3, and the machine tool spindle 11 fixes the material round steel 9. The end of the material round steel 9 to be tapped passes through the material set 8 and the inner ring of the round die 4. The inner ring of the round die 4 has teeth, and is ready to tap the end of the material round steel 9 to be tapped.

[0025] The guide seat 2 also has a positioning screw hole 202 on its radial side. One end of the guide rod 6 is screwed into the positioning screw hole 202, so that its other end fits against the machine tool guide rail 10. After adjustment, it is tightened with a nut to fix it. When the machine tool spindle 11 rotates, the fixture will generate friction with the rotation of the material round steel 9 and the round die 4, and move linearly along the axial direction of the material round steel 9. At this time, the guide rod 6 slides along the machine tool guide rail 10, thereby completing the tapping process. Since the material round steel 9 is subjected to the radial constraint of the material matching 8 and the guide rod 6, the tapped thread is ensured to be coaxial with the material round steel 9, and there will be no thread eccentricity.

[0026] like Figure 5 The inner ring of the round die 4 has multiple teeth 402 evenly distributed on the same circumference. It can be designed with five teeth 402. A circular chip opening 403 is constructed between each tooth 402. This design can increase the chip discharge space, solve the chip blockage problem, thereby reducing the tooth wobble caused by local resistance, increasing the stability of the round die during the machining process, and ensuring the tapping effect on the round steel 9.

[0027] The working principle of this utility model:

[0028] After the round steel bar 9 is clamped by the machine tool spindle 11, it passes through the material fitting 8 and reaches the round die 4. When the machine tool spindle 11 rotates, the working device initially provides an axial thrust to the round steel bar 9. As the round die 4 begins tapping, the working device generates friction with the rotation of the round steel bar 9 and the round die 4, moving linearly along the axial direction of the round steel bar 9. At this time, the guide rod 6 slides along the machine tool guide rail 10. During the tapping process, the round steel bar 9 is subjected to radial constraints from the material fitting 8 and the guide rod 6, ensuring that the tapped thread is coaxial with the round steel bar 9 and preventing thread eccentricity.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tapping tool for dies, characterized in that: The assembly includes a deep groove ball bearing (1), a guide seat (2), a die set (3), a round die (4), a set screw (5), a guide rod (6), and a material set (8). The guide seat (2) has mounting holes at both axial ends, which are interconnected to allow a round steel bar (9) to pass through. One mounting hole (I) houses the deep groove ball bearing (1), and a retaining ring (7) axially limits its movement. The material set (8) is nested within the inner ring of the deep groove ball bearing (1). The other mounting hole (II) houses the die set (3), and also includes a positioning screw hole (201). The round die (4) is nested in the inner ring of the die set (3). The inner ring of the round die (4) has teeth. The center lines of the positioning screw hole one (201) and the positioning hole one (301) provided on the die set (3) and the positioning hole two (401) provided on the round die (4) are aligned. After they are aligned, the set screw (5) and the nut are screwed in to fix them together. The guide seat (2) is also provided with a positioning screw hole two (202) in the radial direction. One end of the guide rod (6) is screwed into the positioning screw hole two (202) so that the other end of it is in contact with the machine tool guide rail (10). After it is adjusted to the position, it is tightened with a nut to fix it.

2. The tapping fixture according to claim 1, characterized in that: The inner ring of the round die (4) has five teeth (402) evenly distributed on the same circumference, and a circular cutting mouth (403) is constructed between each tooth (402).

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