Sleeve tool for assisting tapping

Abstract

The invention discloses a sleeve tool for assisting tapping in the field of part machining equipment, which comprises a screw tap structure, a linear sleeve structure movably sleeves the screw tap structure, a plurality of chip grooves are formed in one end, far away from the screw tap structure, of the linear sleeve structure at intervals in the circumferential direction, and a plurality of supporting legs are formed among the chip grooves. The supporting legs are used for abutting against the surface of a to-be-tapped part at the same time. Through the arrangement of the linear sleeve structure, the problem that the tapping quality is not high due to the fact that it is difficult for an operator to guarantee that a screw tap is perpendicular to a hole in a part in the tapping process can be solved; through the arrangement of the supporting feet, all the supporting feet can make contact with the surface of the part to be tapped at the same time, and it is guaranteed that the whole linear sleeve structure is kept perpendicular to the surface of the part; and the chip discharging groove can ensure that chips after tapping are discharged from the chip discharging groove, and the stability of the tapping process is ensured.

Description

Technical Field

[0001] This invention relates to the field of parts processing equipment, and more particularly to a sleeve tool for assisting tapping. Background Technology

[0002] Tapping is a common operation in machining, and its purpose is to create internal threads on pre-drilled parts.

[0003] Currently, tapping is mainly divided into machine tool tapping and manual tapping. Since machine tools cannot process certain irregularly shaped or large parts, manual tapping is the only option. When performing manual tapping, operators typically use a threaded tap, which is driven to tap the part. However, in existing technology, without auxiliary devices, operators rely entirely on feel to keep the tapping tool perpendicular to the part during the tapping process. This method of controlling perpendicularity solely by manual feel is highly uncertain, influenced by factors such as the operator's experience and fatigue level. It is difficult to guarantee that the tap remains perpendicular to the hole throughout the tapping process, leading to poor tapping quality. For example, problems such as incomplete thread machining, thread tilting, and uneven pitch may occur. These problems not only affect the assembly accuracy of parts but may also lead to loosening and unreliable connections during use. In severe cases, rework or scrapping of parts may be necessary, increasing production costs and reducing production efficiency. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the technical problem to be solved by the present invention is: how to improve the perpendicularity of the screw hole in manual tapping operation.

[0005] The technical solution adopted by this invention to solve its technical problem is: The auxiliary tapping sleeve tool includes a tap structure, and a straight sleeve structure is movably sleeved on the outside of the tap structure. The end of the straight sleeve structure away from the tap structure has multiple chip removal grooves spaced circumferentially, and multiple support legs are formed between the multiple chip removal grooves. The multiple support legs are used to simultaneously abut against the surface of the part to be tapped.

[0006] Furthermore, the tap has an external thread on its outer wall, and the straight sleeve structure includes a cylinder and a mounting hole opened along the axial direction of the cylinder. The inner wall of the mounting hole has an internal thread that matches the external thread.

[0007] Furthermore, the mounting hole includes a connected mounting portion and a receiving portion. An internal thread is provided in the mounting portion, the inner diameter of the mounting portion is smaller than the inner diameter of the receiving portion, and the mounting portion is located on the side closer to the tap. The receiving portion connects to the chip removal groove.

[0008] Furthermore, multiple chip removal grooves are evenly spaced along the circumferential direction of the end face of the straight sleeve structure.

[0009] Furthermore, the number of chip removal grooves is set to 3, and the central angle between two adjacent legs in the 3 formed legs is 120°.

[0010] Furthermore, the cross-section of the chip removal groove is semi-circular, and two adjacent chip removal grooves are connected at the inner wall of the receiving part.

[0011] Furthermore, the radius of the chip removal groove is not less than the radius of the tap.

[0012] Furthermore, the end face of the support leg used to abut against the surface of the part is designed as a concave curved surface.

[0013] Furthermore, the bottom of the support legs is equipped with an anti-slip pad.

[0014] The beneficial effects of this invention are: The linear sleeve structure solves the problem of operators struggling to ensure the tap is perpendicular to the hole on the part during tapping, resulting in poor tapping quality. Furthermore, the support legs ensure that all legs can simultaneously contact the surface of the part to be tapped, guaranteeing that the entire linear sleeve structure remains perpendicular to the part surface. The chip removal groove ensures that chips are discharged after tapping, guaranteeing the stability of the tapping process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a perspective view of the linear sleeve structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the linear sleeve structure of the present invention; Figure 4 This is a bottom view schematic diagram of the straight sleeve of the present invention; The markings in the diagram are: 1-taper structure, 2-external thread, 3-cylinder body, 4-support foot, 5-chip removal groove, 6-receiving part, 7-mounting part, 8-anti-slip pad layer, 9-internal thread. Detailed Implementation

[0016] The invention will be further described below with reference to the accompanying drawings.

[0017] like Figures 1-4As shown, this application proposes an auxiliary tapping sleeve tool, including a tap structure 1. A straight sleeve structure is movably sleeved on the outside of the tap structure 1. The end of the straight sleeve structure away from the tap structure 1 has multiple chip removal grooves 5 spaced circumferentially, and multiple support legs 4 are formed between the multiple chip removal grooves 5. The multiple support legs 4 are used to simultaneously abut against the surface of the part to be tapped. The straight sleeve structure is a cylindrical sleeve, and a mounting hole structure is provided along the axial direction of the straight sleeve structure. The tap structure 1 achieves the tapping and drilling effect by limiting the fit with the mounting hole structure. The outer wall of the tap structure 1 and the inner wall of the mounting hole structure can slide relative to each other. In this embodiment, in order to ensure the stability of drilling, the outer wall of the tap structure 1 is provided with an external thread 2. The straight sleeve structure includes a cylinder 3 and a mounting hole opened along the axial direction of the cylinder 3. The inner wall of the mounting hole is provided with an internal thread 9 adapted to the external thread 2. Through the threaded fit, the tap can be rotated into the inside of the sleeve and finally protrude from the bottom of the sleeve to realize the tapping process.

[0018] First, it should be stated that the straight sleeve structure can solve the problem that it is difficult for operators to ensure that the tap is perpendicular to the hole on the part during the tapping process, resulting in poor tapping quality. Moreover, the support legs 4 can ensure that all the support legs 4 can contact the surface of the part to be tapped at the same time, ensuring that the entire straight sleeve structure remains perpendicular to the surface of the part. The chip removal groove 5 can ensure that the chips after tapping are discharged from the chip removal groove 5, ensuring the stability of the tapping process.

[0019] The mounting hole includes a mounting part 7 and a receiving part 6 connected together. An internal thread 9 is provided on the mounting part 7. The inner diameter of the mounting part 7 is smaller than the inner diameter of the receiving part 6. The mounting part 7 is located on the side close to the tap structure 1. The receiving part 6 is connected to the chip removal groove 5. That is to say, during the tapping process, the upper part of the tap structure 1 is engaged with the internal thread 9, and the outer diameter of the lower part is smaller than the inner diameter of the receiving part 6. The chips generated during the tapping process gradually accumulate in the receiving part 6 and are gradually discharged from the chip removal groove 5. In order to ensure the stability of chip removal and the convenience of processing, multiple chip removal grooves 5 are evenly distributed around the end face of the straight sleeve structure. Multiple chip removal grooves 5 are arranged at intervals on the periphery of the cylinder 3, separating multiple support legs 4. Compared with the normal annular contact surface, the setting of multiple support legs 4 can improve the stability of contact and prevent the cylinder 3 from shifting or shaking when it comes into contact with the surface of the part, thus affecting the tapping process.

[0020] The chip removal groove 5 has a semi-circular cross-section, and two adjacent chip removal grooves 5 are connected at the inner wall of the receiving part 6. Specifically, by adjusting the number or size of the chip removal grooves 5, the inner sides of two adjacent chip removal grooves 5 intersect or connect, ensuring that the chips accumulated in the receiving part 6 can be efficiently discharged from the corresponding chip removal grooves 5, thereby improving work efficiency. At the same time, the radius of the chip removal groove 5 is not less than the radius of the tap structure 1, so that the size of the chip removal groove 5 is large enough to prevent the tapping chips in the receiving part 6 from accumulating due to the chip removal groove 5 being too small, thereby improving the smoothness of the working process.

[0021] In practical applications, some parts to be tapped have uneven surfaces. If the end face of the support leg 4 is a smooth flat surface, it may wobble and become unstable when in contact with the part surface, thus affecting the accuracy and stability of subsequent tapping operations. To solve the above problems, the end face of the support leg 4 that abuts against the part surface is designed as a concave curved surface. In other words, the end face of the support leg 4 is designed to be concave, which reduces the contact area between the support leg 4 and the part surface and allows the concave part to avoid irregular surfaces. This ensures that the protruding edge of the end face of the support leg 4 makes stable contact with the part surface, thus guaranteeing stability.

[0022] In another embodiment, the bottom of the support leg 4 is provided with an anti-slip pad 8. The anti-slip pad 8 can be a rubber pad or a relatively rough metal layer to prevent slippage during the tapping process.

[0023] In a preferred embodiment, the number of chip removal grooves 5 is set to 3, and the central angle between two adjacent support legs 4 is 120°. The equilateral triangle formed by the three support legs 4 has high stability, further improving the placement stability of the straight sleeve structure.

[0024] In summary, this invention proposes an auxiliary tapping sleeve tool. By using three support points at the bottom of the sleeve to ensure its perpendicularity to the component surface, it ensures that the tap structure 1 is perpendicular to the drill hole. This effectively avoids problems such as incomplete thread processing, thread tilting, and uneven pitch caused by the tilt of the tap structure 1, significantly improving tapping quality and resulting in higher thread precision that meets higher assembly requirements. Furthermore, it eliminates the need for operators to rely entirely on their feel to control the perpendicularity of the tap structure 1, reducing the requirements for operator experience and skill level. Even new operators can easily perform high-quality tapping operations. The improved tapping quality reduces rework and scrap caused by tapping quality issues, thus saving time and costs and improving overall production efficiency. The chip removal space at the bottom can promptly remove chips generated during the tapping process, preventing chip accumulation from affecting the tapping effect and further ensuring the smooth progress of the tapping process, thus improving production efficiency.

Claims

1. A tapping auxiliary sleeve tool, comprising a tap structure ((1), characterized in that, The tap structure ((1) has a straight sleeve structure externally connected. The end of the straight sleeve structure away from the tap structure is provided with multiple chip removal grooves (5) at intervals along the circumference. Multiple support legs (4) are formed between the multiple chip removal grooves (5). The multiple support legs (4) are used to simultaneously abut against the surface of the part to be tapped.

2. The auxiliary tapping sleeve tool according to claim 1, characterized in that, The tap structure ((1) is provided with an external thread (2), and the straight sleeve structure includes a cylinder (3) and an installation hole opened along the axial direction of the cylinder (3). The inner wall of the installation hole is provided with an internal thread (9) that is compatible with the external thread (2).

3. The auxiliary tapping sleeve tool according to claim 2, characterized in that, The mounting hole includes a mounting part (7) and a receiving part (6) connected to each other. An internal thread (9) is provided on the mounting part (7). The inner diameter of the mounting part (7) is smaller than the inner diameter of the receiving part (6). The mounting part (7) is located on the side close to the tap structure. The receiving part (6) is connected to the chip removal groove (5).

4. The auxiliary tapping sleeve tool according to claim 3, characterized in that, Multiple chip removal grooves (5) are evenly spaced along the circumferential direction of the end face of the straight sleeve structure.

5. The auxiliary tapping sleeve tool according to claim 4, characterized in that, The number of chip removal grooves (5) is set to 3, and the central angle between two adjacent legs (4) in the 3 formed legs (4) is 120°.

6. The auxiliary tapping sleeve tool according to claim 3, characterized in that, The cross-section of the chip removal groove (5) is semi-circular, and two adjacent chip removal grooves (5) are connected at the inner wall of the receiving part (6).

7. The auxiliary tapping sleeve tool according to claim 6, characterized in that, The radius of the chip removal groove (5) is not less than the radius of the tap structure.

8. The auxiliary tapping sleeve tool according to claim 1, characterized in that, The bottom surface of the support leg (4) is a concave curved surface.

9. The auxiliary tapping sleeve tool according to claim 1, characterized in that, The bottom of the support leg (4) is provided with an anti-slip pad (8).

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