Variable helix complex tap

Abstract

This utility model relates to the technical field of cutting tools, and particularly to a variable helix compound tap. The variable helix compound tap includes a drill gun body, with a switch provided on one side surface of the drill gun body. This variable helix compound tap offers efficient and convenient installation and disassembly. Installation and disassembly can be quickly completed by simply rotating the fixing component, greatly saving operation time and improving processing efficiency. It features precise and reliable positioning; the matching of the positioning block and positioning groove, as well as the clamping design of the first and second clamping plates, ensures accurate tap positioning after installation, preventing displacement during processing and effectively improving processing accuracy. It has a wide range of applications, allowing for quick replacement of taps of different specifications to meet diverse processing needs. The structure is stable and durable, with all components tightly fitted together, maintaining good stability even under high torque and cutting force, extending the tap's service life and reducing operating costs.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, and in particular to variable spiral composite taps. Background Technology

[0002] Variable helix compound taps are cutting tools used for machining internal threads. They typically consist of a drill section and a tap section. The drill section has a large helix angle, resulting in good chip removal and a sharp cutting edge, reducing cutting resistance; the tap section has a relatively small helix angle, meeting tapping requirements. Variable helix compound taps can perform drilling and tapping operations simultaneously, improving machining efficiency and reducing tool changes. They are widely used in modern manufacturing, hence the particular need for variable helix compound taps.

[0003] Chinese patent CN219665323U, published on September 12, 2023, discloses a variable helix composite tap. The drill bit section has a larger helix angle, resulting in better chip removal at the drill bit. Furthermore, the main cutting edge is sharper, which can reduce cutting resistance and enhance chip removal. In addition, the core thickness increases continuously from the drill tip to the drill shank, which can improve the torque bearing capacity of the entire composite tap. However, this variable helix composite tap lacks an effective and convenient structure for installation, which to some extent affects the convenience and installation efficiency during use. Utility Model Content

[0004] The purpose of this invention is to provide a variable spiral composite tap to solve the problem mentioned in the background art that the existing variable spiral composite taps lack an effective and convenient structure for installation, which to some extent affects the convenience and installation efficiency during use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a variable spiral composite tap, including a drill gun body, a switch is provided on one side surface of the drill gun body, a connector is fixedly connected to one side surface of the drill gun body, a rotating shaft is rotatably mounted on one side surface of the connector, a positioning block is fixedly connected to one side of the rotating shaft, and a connecting mechanism is provided on one side surface of the connector. The connecting mechanism includes a threaded sleeve, which is fixedly connected to one side surface of the connector. A fixing member is threadedly connected to the outer wall surface of the threaded sleeve. A first push block is slidably connected to the inner wall surface of the fixing member. A first clamping piece is fixedly connected to one side surface of the first push block. A protrusion is fixedly connected to one side surface of the first clamping piece. A second clamping piece is slidably connected to one side surface of the first clamping piece. A groove is formed on one side surface of the second clamping piece. A second push block is provided on one side surface of the second clamping piece. A connecting member is slidably connected to one side surface of the second clamping piece. A positioning groove is formed on one side surface of the connecting member. A tap is fixedly connected to one side surface of the connecting member.

[0006] Preferably, the outer wall dimension of the positioning block matches the inner wall dimension of the positioning groove, and the vertical center axis of the connector coincides with the vertical center axis of the tap.

[0007] Preferably, the second clip has the same outer wall size as the first clip, and the cross-sections of the second clip and the first clip are designed in a "C" shape.

[0008] Preferably, the protrusions are provided in two identical sizes and are symmetrically distributed along the central axis of the first clamping piece, and the grooves are provided in two identical sizes and are symmetrically distributed along the central axis of the second clamping piece, with the inner wall dimensions of the two protrusions matching the outer wall dimensions of the protrusions.

[0009] Preferably, the inner wall of the fastener is provided with a slope, and the outer wall dimension of the slope is in contact with the dimension of the first push block, and the outer wall dimensions of the first push block and the second push block are the same.

[0010] Preferably, the threaded sleeve has a first clamp and a second clamp slidably connected on the side surface away from the connecting member, and the central axis of the fixing member coincides with the central axis of the threaded sleeve.

[0011] Preferably, the connector has a "T" shaped cross-section, and the inner wall of the fastener is provided with a threaded groove that matches the outer wall size of the threaded sleeve.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This variable spiral composite tap, through the setting of the tensioning mechanism, is efficient and convenient to install and disassemble. The installation and disassembly of the tap can be quickly completed by simply rotating the fixing part, which greatly saves operation time and improves processing efficiency. The positioning is accurate and reliable. The matching of the positioning block and the positioning groove, as well as the clamping design of the first clamping plate and the second clamping plate, ensure that the tap is accurately positioned after installation and is not prone to displacement during processing, which effectively improves processing accuracy. It has a wide range of applications and can quickly replace tap parts of different specifications to meet diverse processing needs. The structure is stable and durable, and the components are closely matched with each other. It can still maintain good stability when subjected to large torque and cutting force, extending the service life of the tap and reducing the cost of use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of the fastener of this utility model; Figure 4 This is a schematic diagram of the disassembled structure of the connecting mechanism of this utility model; Figure 5This is a schematic diagram of the fixing component and its internal cross-sectional structure of the present invention.

[0014] In the diagram: 1. Drill gun body; 2. Switch; 3. Connector; 4. Shaft; 5. Positioning block; 6. Connecting mechanism; 601. Threaded sleeve; 602. Fixing component; 603. First push block; 604. First clamping plate; 605. Protrusion; 606. Second clamping plate; 607. Groove; 608. Second push block; 609. Connector; 610. Positioning groove; 611. Tap. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-5 This utility model provides a technical solution: a variable spiral composite tap, including a drill gun body 1, a switch 2 is provided on one side surface of the drill gun body 1, a connector 3 is fixedly connected to one side surface of the drill gun body 1, a rotating shaft 4 is rotatably connected to one side surface of the connector 3, a positioning block 5 is fixedly connected to one side of the rotating shaft 4, and a connecting mechanism 6 is provided on one side surface of the connector 3. The connecting mechanism 6 includes a threaded sleeve 601, which is fixedly connected to one side surface of the connector 3. A fixing member 602 is threadedly connected to the outer wall surface of the threaded sleeve 601. A first push block 603 is slidably connected to the inner wall surface of the fixing member 602. A first clamping piece 604 is fixedly connected to one side surface of the first push block 603. A protrusion 605 is fixedly connected to one side surface of the first clamping piece 604. A second clamping piece 606 is slidably connected to one side surface of the first clamping piece 604. A groove 60 is formed on one side surface of the second clamping piece 606. 7. A second push block 608 is provided on one side surface of the second clamping piece 606. A connector 609 is slidably connected to one side surface of the second clamping piece 606. A positioning groove 610 is opened on one side surface of the connector 609. A tap 611 is fixedly connected to one side surface of the connector 609. The connection is achieved through the threaded sleeve 601, the fixing member 602, the first push block 603, the first clamping piece 604, the protrusion 605, the second clamping piece 606, the groove 607, the second push block 608, the connector 609, the positioning groove 610, and the tap 611. In this configuration, during use, the positioning groove 610 on the connector 609 is aligned with the positioning block 5 to complete the initial positioning. Then, the fixing member 602 is rotated clockwise. Since the fixing member 602 is threadedly connected to the threaded sleeve 601, the fixing member 602 will move inward along the outer wall of the threaded sleeve 601. The slope of the inner wall of the fixing member 602 fits against the first push block 603 and the second push block 608. As the fixing member 602 advances, the slope pushes the first push block 603 to slide inward. The first push block 603 drives the first clamping piece 604 to move. At this time, the first... The protrusion 605 on the first clamp 604 slides along the groove 607 of the second clamp 606, causing the second clamp 606 to move inward synchronously, so that the first clamp 604 and the second clamp 606 tightly clamp the connector 609, thereby securely installing the tap 611. When disassembling, simply rotate the fixing part 602 counterclockwise, and the first clamp 604 and the second clamp 606 lose their thrust and open under external force, so that the tap 611 can be easily removed. This convenient and quick disassembly method not only facilitates the daily replacement and maintenance of the tap.

[0017] Furthermore, the outer wall dimension of the positioning block 5 matches the inner wall dimension of the positioning groove 610, and the vertical center axis of the connector 609 coincides with the vertical center axis of the tap 611. Through the setting of the positioning block 5 and the positioning groove 610, when in use, the connector 609 is brought close to the connecting piece 3. The size matching characteristics of the positioning block 5 and the positioning groove 610 enable it to quickly achieve accurate alignment without repeated adjustments. After the positioning block 5 is embedded in the positioning groove 610, it not only provides circumferential limit for the connector 609 to prevent it from twisting during installation and operation, but also ensures that the installation direction of the tap 611 is accurate.

[0018] Furthermore, the second clamping piece 606 has the same outer wall dimensions as the first clamping piece 604, and the cross-sections of the second clamping piece 606 and the first clamping piece 604 are designed in a "C" shape. Through the arrangement of the second clamping piece 606 and the first clamping piece 604, the clamping force of the second clamping piece 606 and the first clamping piece 604 is uniform during use. The symmetrical structure of the "C" shaped clamping piece makes the connecting piece 609 subjected to balanced force, avoiding damage caused by local stress concentration.

[0019] Furthermore, two protrusions 605 of the same size are provided and are symmetrically distributed along the central axis of the first clamping piece 604. Two grooves 607 of the same size are provided and are symmetrically distributed along the central axis of the second clamping piece 606. The inner wall dimensions of the two protrusions 605 match the outer wall dimensions of the protrusions 605. Through the arrangement of the protrusions 605 and the grooves 607, in use, since the protrusions 605 and the grooves 607 are precisely matched in size, the two cooperate with each other to form a stable support structure, ensuring that the first clamping piece 604 and the second clamping piece 606 are not prone to displacement, thus improving the stability of the mechanism.

[0020] Furthermore, the inner wall of the fixing member 602 is provided with a slope, and the outer wall size of the slope is in contact with the size of the first push block 603. The outer wall size of the first push block 603 and the second push block 608 are the same. With the setting of the first push block 603 and the second push block 608, when the fixing member 602 is rotated during use, since the slope of its inner wall is in contact with the size of the first push block 603, as the fixing member 602 is screwed inward along the threaded sleeve 601, the slope will apply an inward component force to the first push block 603, pushing the first push block 603 to slide inward. Since the outer wall dimensions of the first push block 603 and the second push block 608 are the same, and the structure of the inner wall slope of the fixing member 602 is symmetrical, the second push block 608 will be pushed with the same force while the first push block 603 is pushed. The first push block 603 drives the first clamping plate 604, and the second push block 608 drives the second clamping plate 606. The two move inward synchronously, thereby achieving uniform clamping of the connecting member 609. The operation is labor-saving and efficient. Through the cooperation of the slope and the push block, the small rotational force is converted into a large clamping force, reducing the labor intensity of the operator, and at the same time, clamping and releasing can be achieved quickly.

[0021] Furthermore, the first clamping piece 604 and the second clamping piece 606 are slidably connected to the side surface of the threaded sleeve 601 away from the connecting piece 3. The central axis of the fixing piece 602 coincides with the central axis of the threaded sleeve 601. Through the setting of the threaded sleeve 601 and the central axis, when the fixing piece 602 is rotated clockwise during use, since the central axes of the two coincide, the fixing piece 602 can smoothly rotate inward along the axial direction of the threaded sleeve 601. The fixing piece 602 provides a stable guide track for the sliding of the clamping piece, ensuring that the clamping piece will not deviate or shake during the movement, and ensuring the accuracy of the clamping action.

[0022] Furthermore, the connector 609 has a "T" shaped cross-section, and the inner wall of the fastener 602 is provided with a threaded groove that matches the outer wall size of the threaded sleeve 601. With the connector 609, the horizontal part of the "T" shaped structure increases the contact area with the clamping plate during use, making the clamping force distribution more uniform, effectively preventing the tap from loosening or shifting during high torque machining, and improving stability.

[0023] Working Principle: In the structural design of this variable spiral composite tap, the components work together to achieve convenient installation and stable use of the tap. When the tap part 611 needs to be installed, first align the connecting part 609 with the positioning block 5. Since the outer wall size of the positioning block 5 matches the inner wall size of the positioning groove 610, the initial positioning can be completed quickly. Then, rotate the fixing part 602. Because the inner wall of the fixing part 602 is provided with a threaded groove and is adapted to the outer wall size of the threaded sleeve 601, as the fixing part 602 rotates, it will move inward along the outer wall of the threaded sleeve 601. Also, because the inner wall of the fixing part 602 is provided with a slope, and the outer wall size of the slope matches the size of the first push block 603, when the fixing part 602 moves inward, the slope will push the first push block 603 inward. Sliding, the first push block 603 drives the first clamping plate 604 to move. Since the protrusion 605 on the first clamping plate 604 and the groove 607 on the second clamping plate 606 cooperate with each other, the movement of the first clamping plate 604 will drive the second clamping plate 606 to move inward synchronously, thereby clamping the connector 609 with the first clamping plate 604 and the second clamping plate 606, realizing the firm installation of the tap 611. When disassembling, rotate the fixing member 602 in the opposite direction, and the fixing member 602 moves outward. The first push block 603 and the second push block 608 lose their pushing force. Under the external force, the first clamping plate 604 and the second clamping plate 606 open outward, releasing the clamping of the connector 609, and the tap 611 can be easily removed, completing the disassembly operation. This completes the use process of the variable spiral compound tap.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A variable spiral composite tap, comprising a drill gun body (1), characterized in that: A switch (2) is provided on one side surface of the drill gun body (1), a connector (3) is fixedly connected to one side surface of the drill gun body (1), a rotating shaft (4) is rotatably connected to one side surface of the connector (3), a positioning block (5) is fixedly connected to one side of the rotating shaft (4), and a connecting mechanism (6) is provided on one side surface of the connector (3). The connecting mechanism (6) includes a threaded sleeve (601), which is fixedly connected to one side surface of the connector (3). A fixing member (602) is threadedly connected to the outer wall surface of the threaded sleeve (601). A first push block (603) is slidably connected to the inner wall surface of the fixing member (602). A first clamping piece (604) is fixedly connected to one side surface of the first push block (603), and a protrusion (605) is fixedly connected to one side surface of the first clamping piece (604). A second clamping piece (606) is slidably connected to one side surface of the first clamping piece (604). A groove (607) is provided on one side surface of the second clamping piece (606). A second push block (608) is provided on one side surface of the second clamping piece (606). A connector (609) is slidably connected to one side surface of the second clamping piece (606). A positioning groove (610) is provided on one side surface of the connector (609). A tap (611) is fixedly connected to one side surface of the connector (609).

2. The variable helix composite tap according to claim 1, characterized in that: The outer wall dimension of the positioning block (5) matches the inner wall dimension of the positioning groove (610), and the vertical center axis of the connector (609) coincides with the vertical center axis of the tap (611).

3. The variable spiral composite tap according to claim 1, characterized in that: The second clip (606) has the same outer wall size as the first clip (604), and the cross-sections of the second clip (606) and the first clip (604) are designed in a "C" shape.

4. The variable spiral composite tap according to claim 1, characterized in that: The protrusions (605) are provided in two identical sizes and are symmetrically distributed along the central axis of the first clamping piece (604). The grooves (607) are provided in two identical sizes and are symmetrically distributed along the central axis of the second clamping piece (606). The inner wall dimensions of the two protrusions (605) match the outer wall dimensions of the protrusions (605).

5. The variable spiral composite tap according to claim 1, characterized in that: The inner wall of the fastener (602) is provided with a slope, and the outer wall size of the slope is in line with the size of the first push block (603). The outer wall size of the first push block (603) and the second push block (608) are the same.

6. The variable helix composite tap according to claim 1, characterized in that: The threaded sleeve (601) has a first clamping piece (604) and a second clamping piece (606) slidably connected on the side surface away from the connector (3), and the central axis of the fixing member (602) coincides with the central axis of the threaded sleeve (601).

7. The variable helix composite tap according to claim 1, characterized in that: The connector (609) has a "T" shaped cross section, and the inner wall of the fastener (602) is provided with a threaded groove, which is adapted to the outer wall size of the threaded sleeve (601).

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