Thread repairing tool

Abstract

The utility model relates to the technical field of thread repairing equipment, in particular to a thread repairing tool. According to the technical scheme, the tool comprises a bolt hole, a long-handle chaser and a short-handle chaser, the long-handle chaser and the short-handle chaser are used for repairing the bolt hole, the tool further comprises centering guide cylinders arranged at the bottoms of the long-handle chaser and the short-handle chaser in a sleeving mode, tool rests are connected to the bottoms of the long-handle chaser and the short-handle chaser, and a plurality of blades distributed in a circumferential array mode are arranged on the tool rests. According to the thread repairing tool, the long-handle chaser, the short-handle chaser, the centering guide cylinder, the tool rest, the blade, the adjusting mechanism and other structures are matched, so that the thread repairing tool has the functions of the long-handle chaser and the short-handle chaser. Wherein the long-handle chaser is suitable for being used in a place which is large in space and needs a large operation range, and can be easily rotated and operated; and the short-handle chaser is suitable for places with narrow space and smaller operation range, and is more accurate. Therefore, the thread repairing tool can adapt to different repairing scenes and working spaces, and the application range is wider.

Description

Technical Field

[0001] This utility model relates to the field of thread repair equipment technology, and in particular to thread repair tools. Background Technology

[0002] Thread repair tools are used to repair damaged, worn, or broken threads. The main purpose of these tools is to restore threads to standard dimensions and shapes, ensuring they can properly fit and function. Current thread repair tools are limited to a single type of comb (e.g., long-handled or short-handled), which can make them less flexible in confined spaces or challenging locations. While long-handled combs offer better operability in larger spaces, they may not be suitable for confined areas; conversely, short-handled combs, while suitable for narrow spaces, are less convenient when greater torque or a wider operating range is required. Utility Model Content

[0003] The purpose of this invention is to address the problem that current thread repair tools can only use one type of comb (such as long-handled or short-handled), which makes them inflexible in narrow spaces or special locations. This invention proposes a thread repair tool.

[0004] The technical solution of this utility model: a thread repair tool, including bolt holes and long-handled and short-handled combs for repair, further including: a centering guide cylinder sleeved on the bottom of the long-handled and short-handled combs, a tool holder connected to the bottom of each of the long-handled and short-handled combs, a plurality of blades arranged in a circumferential array on the tool holder, a core rod inside each of the long-handled and short-handled combs, a conical shaft inside the tool holder, a conical sleeve sleeved on the top of the conical shaft, and the top and bottom of the core rod fixedly connected; an adjustment mechanism is provided on the top of the long-handled and short-handled combs.

[0005] Optionally, the adjustment mechanism includes a coarse adjustment nut, a limit nut, and a fine adjustment nut sequentially arranged at the top of the long-handled comb and the short-handled comb. The coarse adjustment nut, the limit nut, and the fine adjustment nut are all spirally connected to the top of the core rod. The top of the long-handled comb is provided with a linear bearing to support the rotation of the core rod.

[0006] Optionally, the tool holder is provided with a tool setting ring cylinder inside.

[0007] Optionally, both the long-handled and short-handled combs are equipped with limiting supports, each with a balancer at the top and a hanging ring at the bottom to support the long-handled and short-handled combs.

[0008] Optionally, the hanging ring is movably connected to the top of both the long-handled and short-handled comb blades, and both the long-handled and short-handled comb blades are equipped with a scale.

[0009] Optionally, the lifting ring is provided with a positioning nut that locks the top of the core rod.

[0010] Optionally, each of the limiting pillars is provided with a positioning seat at its bottom end.

[0011] Optionally, the bottom of the centering guide cylinder is provided with an upper centering groove, and the bottom of the blade is provided with a lower centering groove to make the blade fit into the thread of the inner wall of the bolt hole.

[0012] In summary, this application includes at least one of the following beneficial technical effects:

[0013] This invention utilizes a combination of a long-handled comb blade, a short-handled comb blade, a centering guide cylinder, a blade holder, blades, and an adjustment mechanism to enable a thread repair tool to possess the functions of both long-handled and short-handled comb blades. The long-handled comb blade is suitable for use in spaces with ample room and a large operating range, allowing for easy rotation and operation; while the short-handled comb blade is suitable for confined spaces with a smaller operating range, offering greater precision. This allows the thread repair tool to adapt to different repair scenarios and workspaces, thus broadening its applicability. Attached Figure Description

[0014] Figure 1 A schematic diagram of the first state structure of the thread repair tool of this utility model is given;

[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0016] Figure 3 A schematic diagram of the second state structure of the thread repair tool of this utility model is given;

[0017] Figure 4 for Figure 1 A cross-sectional view of a medium-length shank comb.

[0018] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0019] Figure 6 A schematic diagram of the cross-sectional structure connecting the long-handled comb blade and the bolt hole;

[0020] Figure 7 This is a structural diagram of a lifting ring.

[0021] Reference numerals: 1. Long-handled comb blade; 2. Short-handled comb blade; 121. Centering guide cylinder; 122. Blade holder; 123. Blade; 124. Coarse adjustment nut; 125. Limiting nut; 126. Fine adjustment nut; 127. Linear bearing; 128. Core rod; 129. Tapered shaft; 130. Tapered sleeve; 131. Upper centering groove; 132. Lower centering groove; 133. Blade setting ring cylinder; 3. Positioning seat; 4. Limiting support column; 5. Balancer; 6. Lifting ring; 61. Positioning nut; 7. Bolt hole. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0023] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0024] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Example

[0029] like Figures 1 to 7 As shown, the thread repair tool proposed in this utility model includes a bolt hole 7 and a long-handled comb 1 and a short-handled comb 2 for repairing it. Both the long-handled comb 1 and the short-handled comb 2 are equipped with a limiting support 4, which supports the long-handled comb 1 and the short-handled comb 2 for normal operation. The bottom end of each limiting support 4 is provided with a positioning seat 3, which is a structural component installed or fixed to the bottom of the limiting support 4 to ensure stable positioning of the support. Its function is to help the limiting support 4 maintain a fixed position during use, preventing displacement or tilting.

[0030] The positioning seat 3, in conjunction with the long-handled comb blade 1 and the short-handled comb blade 2, positions the bolt hole 7. The long-handled comb blade 1 and the short-handled comb blade 2 are connected to the balancer 5 via the hanging ring 6, allowing them to move up and down. The weight of the long-handled comb blade 1 and the short-handled comb blade 2 is balanced by the upper balancer 5, and the tension range of the balancer 5 covers the weight of the comb blades. Each limiting support column 4 has a balancer 5 at its top, which is a device or tool used to adjust, maintain, or restore balance. The bottom of each balancer 5 is connected to a hanging ring 6 supporting the long-handled comb blade 1 and the short-handled comb blade 2. The hanging ring 6 is movably connected to the top of the long-handled comb blade 1 and the short-handled comb blade 2. Both the long-handled comb blade 1 and the short-handled comb blade 2 have dials. The hanging ring 6 has a positioning nut 61 that locks the top of the core rod 128, preventing it from moving upwards too far.

[0031] In addition, this embodiment also includes a centering guide cylinder 121 sleeved at the bottom of the long-handled comb blade 1 and the short-handled comb blade 2. The bottom of the centering guide cylinder 121 has an upper centering groove 131, and the bottom of the blade 123 has a lower centering groove 132 for engaging with the threaded inner wall of the bolt hole 7. The bottom of both the long-handled comb blade 1 and the short-handled comb blade 2 is connected to a tool holder 122. The tool holder 122 has a tool setting ring cylinder 133 inside, and several blades 123 are arranged in a circumferential array on the tool holder 122. The blade 123 is a tool used to repair damaged or worn threads, and is commonly used in metal processing, mechanical repair, and equipment maintenance. Its main function is to restore or improve the size, shape, and function of the thread to ensure that the thread can work normally.

[0032] It is worth noting that both the long-handled comb blade 1 and the short-handled comb blade 2 have a core rod 128 inside. A tapered sleeve 130 and a tapered shaft 129 are connected below the core rod 128. The coarse adjustment nut 124 and fine adjustment nut 126 at the top push or pull back the tapered sleeve 130 and tapered shaft 129, allowing the blade 123 to open or retract. Because the core rod 128 of the long-handled comb blade 1 has a long cantilever structure, existing linear bearings ensure the straightness of the core rod 128. In addition, the thread repair equipment is also equipped with a standard expansion disc, which controls the opening size of the long-handled comb blade 1 or the short-handled comb blade 2 when repairing the bolt hole 7 by machining the main thread of a standard size. The tool holder 122 has a tapered shaft 129 inside, and a tapered sleeve 130 is fitted on the top of the tapered shaft 129. The top end of the core rod 128 is fixedly connected to the bottom end of the core rod 128. The bottom of the long-handled comb blade 1 and the short-handled comb blade 2 are the blade heads, and the blade heads of the long-handled comb blade 1 and the short-handled comb blade 2 are slidably fitted with the blade holder 122 to control the rotation of the blade heads for repairing the bolt holes 7. The tapered sleeve 130 is connected to the tapered shaft 129, and the tapered sleeve 130 is connected to the blade 123 to control the extension and retraction of the blade 123. In order to enable the blade heads to automatically align with the center of the bolt holes 7, both of these connections are loose connections to ensure that the blade heads have a certain amount of movement in the vertical and circumferential directions after entering the bolt holes 7.

[0033] Furthermore, such as Figures 3 to 5 As shown, an adjustment mechanism is provided at the top of the long-handled comb blade 1 and the short-handled comb blade 2. The adjustment mechanism includes a coarse adjustment nut 124, a limit nut 125, and a fine adjustment nut 126 sequentially arranged at the top of the long-handled comb blade 1 and the short-handled comb blade 2. The coarse adjustment nut 124 is a nut used to adjust the position of components in machinery or equipment, typically used for coarse adjustments, facilitating a wide range of adjustments. The limit nut 125 is also a nut used to adjust the position of components in machinery or equipment, typically used for coarse adjustments, facilitating a wide range of adjustments. The fine adjustment nut 126 is a nut used for precise adjustment of the position of mechanical components, typically having finer threads and higher adjustment accuracy. The coarse adjustment nut 124, limit nut 125, and fine adjustment nut 126 are all screwed to the top of the core rod 128. The top of the long-handled comb blade 1 has an internal linear bearing 127 that supports the rotation of the core rod 128. The linear bearing 127 is a mechanical component used to support and guide linear motion, typically used in conjunction with shafts, guide rails, etc., to reduce friction and provide smooth linear motion. Its main function is to enable the components it works with (such as sliders, worktables, etc.) to slide smoothly and precisely on a straight track.

[0034] In this embodiment, when a thread repair tool is required, the depth and tooth surface of the internal thread defect in the bolt hole 7 are first determined by inspection. Then, either a long-handled comb 1 or a short-handled comb 2 is selected as needed, and the long-handled comb 1 or short-handled comb 2 is hoisted and positioned using the limiting support 4, the balancer 5, and the lifting ring 6. Next, the torque value of the balancer 5 is adjusted according to the position of the defect on the tooth surface. When the defect is on the upper tooth surface, the torque value of the limiting support 4 is adjusted to be less than the balancing weight, so that the long-handled comb 1 or short-handled comb 2 presses against the upper tooth surface of the inner wall of the bolt hole 7; when the defect is on the lower tooth surface, the torque value of the limiting support 4 is adjusted to be greater than the balancing weight, so that the long-handled comb 1 or short-handled comb 2 is against the upper tooth surface of the inner wall of the bolt hole 7. Next, install the tool holder 122 at the bottom of the long-handled comb blade 1 and the short-handled comb blade 2. Use a wrench to rotate the unfolding shaft of the blade 123 to expand it. At this time, observe the dial on the long-handled comb blade 1 or the short-handled comb blade 2 and record the angle of rotation. Then, retract the long-handled comb blade 1 or the short-handled comb blade 2 and manually insert it into the bolt hole 7. When it reaches the depth of the defect, unfold the long-handled comb blade 1 or the short-handled comb blade 2 according to the recorded angle on the dial. Finally, use a torque wrench to rotate the core rod 128 so that the long-handled comb blade 1 or the short-handled comb blade 2 passes through the defect jamming section. Then, rotate the blade 123 counterclockwise out of the bolt hole 7, thus completing the repair of the internal thread of the bolt hole 7.

[0035] The preferred embodiments of this utility model described above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A thread repair tool, comprising a bolt hole (7) and a long-handled comb (1) and a short-handled comb (2) for repairing it, characterized in that, Also includes: A centering guide cylinder (121) is fitted at the bottom of the long-handled comb (1) and the short-handled comb (2). The bottom of the long-handled comb (1) and the short-handled comb (2) are connected to a blade holder (122). The blade holder (122) is provided with multiple blades (123) arranged in a circular array. The long-handled comb (1) and the short-handled comb (2) are provided with a core rod (128). The blade holder (122) is provided with a conical shaft (129). The top of the conical shaft (129) is fitted with a conical sleeve (130). The top end of the core rod (128) is fixedly connected to the bottom end of the core rod (128). An adjustment mechanism is provided on top of the long-handled comb (1) and the short-handled comb (2).

2. The thread repair tool according to claim 1, characterized in that, The adjustment mechanism includes a coarse adjustment nut (124), a limit nut (125), and a fine adjustment nut (126) arranged sequentially at the top of the long-handled comb (1) and the short-handled comb (2). The coarse adjustment nut (124), the limit nut (125), and the fine adjustment nut (126) are all spirally connected to the top of the core rod (128). The top of the long-handled comb (1) is provided with a linear bearing (127) to support the rotation of the core rod (128).

3. The thread repair tool according to claim 1, characterized in that, The tool holder (122) is provided with a tool setting ring cylinder (133) inside.

4. The thread repair tool according to claim 1, characterized in that, Both the long-handled comb (1) and the short-handled comb (2) are equipped with a limiting support (4). The top of the limiting support (4) is provided with a balancer (5). The bottom of the balancer (5) is connected to a hanging ring (6) that supports the long-handled comb (1) and the short-handled comb (2).

5. The thread repair tool according to claim 4, characterized in that, The hanging ring (6) is movably connected to the top of both the long-handled comb (1) and the short-handled comb (2), and both the long-handled comb (1) and the short-handled comb (2) are provided with a scale.

6. The thread repair tool according to claim 4, characterized in that, The lifting ring (6) is provided with a positioning nut (61) that locks the top of the core rod (128).

7. The thread repair tool according to claim 4, characterized in that, The bottom end of each limiting support (4) is provided with a positioning seat (3).

8. The thread repair tool according to claim 1, characterized in that, The bottom of the centering guide cylinder (121) is provided with an upper centering groove (131), and the bottom of the blade (123) is provided with a lower centering groove (132) that makes the blade (123) threadedly fit with the inner wall of the bolt hole (7).

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