Equipment for preventing screw tap from being twisted off

Abstract

The utility model relates to the technical field of screw taps, in particular to screw tap twist-off prevention equipment which comprises a screw tap body and a rotating handle, a mounting hole groove is formed in one end of the screw tap body, a first rotating arc-shaped groove and a second rotating annular groove are formed in the bottom end of the mounting hole groove, and four connecting inclined grooves are formed between the first rotating arc-shaped groove and the second rotating annular groove. The top of the second rotating annular groove is provided with four rigid check blocks, and the four rigid check blocks correspond to the four connecting inclined grooves correspondingly. According to the screw tap, when the screw tap is clamped and the torque is too large, the rigid piece and the mounting column are disconnected, the rigid piece and the elastic piece are disconnected, the elastic piece enters the first rotating annular groove in the connecting inclined groove, the torque cannot be transmitted to the screw tap body, and the screw tap body cannot be twisted off when the torque is too large.

Description

Technical Field

[0001] This utility model relates to the field of tap technology, and in particular to a tap anti-twist and breakage device. Background Technology

[0002] A tap is a tool used to machine internal threads. It is widely used in machining, automobile manufacturing, aerospace and other fields. A tap usually consists of a working part and a shank. The working part is further divided into a cutting part and a calibration part. The former is ground with a cutting cone and is responsible for cutting, while the latter is used to calibrate the size and shape of the thread.

[0003] In the field of machining, taps are widely used as the core tool for internal thread machining. However, during the tapping process, when the tap gets stuck and the torque is too high, the tap is very easy to break, resulting in losses. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a tap anti-twist device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A tap anti-twist device includes a tap body and a rotating handle. One end of the tap body is provided with an installation hole groove. The bottom end of the installation hole groove is provided with a rotating annular groove 1 and a rotating annular groove 2. Four connecting inclined grooves are provided between the rotating annular groove 1 and the rotating annular groove 2. Four rigid blocks are provided at the top of the rotating annular groove 2, and the four rigid blocks correspond to the four connecting inclined grooves respectively.

[0007] One end of the rotating handle is provided with a post, which is inserted into the mounting hole groove. The bottom end of the post is provided with a mounting post. Rigid members are provided on all four sides of the outer wall of the mounting post. One end of the rigid member is provided with an elastic member. One end of the elastic member is arc-shaped. The rigid member is located in the rotating annular groove and is in contact with the rigid stop. The elastic member is located in the connecting inclined groove and the arc end of the elastic member is in contact with the arc end of the connecting inclined groove.

[0008] In addition, a preferred structure is that the insert post is hollow, a spring is installed inside the insert post, a connecting plate is installed at the bottom end of the spring, and the connecting plate is connected to the mounting post by bolts and nuts.

[0009] In addition, a preferred structure is that the bottom surface of the rotating annular groove has four slots, which are located at one end of the four connecting inclined grooves.

[0010] In addition, a preferred structure is that the bottom of the rigid member is provided with a locking block, which is engaged in a slot.

[0011] In addition, a preferred structure is that the inner wall of the mounting hole groove is provided with four sliding grooves, which are connected to the rotating annular groove.

[0012] In addition, a preferred structure is that the inner wall of the mounting hole groove is provided with four sliding grooves II, which are connected to the rotating annular groove II.

[0013] The beneficial effects of this utility model are as follows:

[0014] In this invention, when the tap gets stuck and the torque is too high, the rigid component disconnects from the mounting post and the elastic component. The elastic component enters the rotating annular groove in the connecting groove, and the torque is not transmitted to the tap body, so that the tap body will not break when the torque is too high. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a tap anti-twist device proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the tap body and the rotating shank of the tap anti-twist device proposed in this utility model when they are separated;

[0017] Figure 3 This is a partial internal structure diagram of a tap anti-twist device proposed in this utility model;

[0018] Figure 4 This utility model proposes a tap anti-twist device. Figure 3 Enlarged structural diagram at point A in the middle;

[0019] Figure 5 This is a schematic diagram of a partial cross-sectional structure of the tap body of a tap anti-twist device proposed in this utility model;

[0020] Figure 6 This utility model proposes a tap anti-twist device. Figure 5 Enlarged structural diagram at point A in the middle;

[0021] Figure 7 This is a schematic diagram of the insert cross-section structure of a tap anti-twist device proposed in this utility model;

[0022] Figure 8 This is a schematic diagram of the insertion post and mounting post installation structure of a tap anti-twist device proposed in this utility model;

[0023] Figure 9 This is a schematic diagram of the mounting column structure of a tap anti-twist device proposed in this utility model.

[0024] In the figure: 1 tap body, 11 mounting hole groove, 12 rotating annular groove one, 13 rotating annular groove two, 131 slot, 14 connecting inclined groove, 15 sliding groove one, 16 sliding groove two, 2 rotating handle, 21 insert post, 22 mounting post, 221 rigid component, 222 elastic component, 223 locking block, 3 rigid stop block, 4 spring, 41 connecting plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Reference Figure 1-9 A tap anti-twist device includes a tap body 1 and a rotating handle 2. One end of the tap body 1 is provided with a mounting hole groove 11. The bottom end of the mounting hole groove 11 is provided with a rotating annular groove 12 and a rotating annular groove 2 13 respectively. Four connecting inclined grooves 14 are provided between the rotating annular groove 12 and the rotating annular groove 2 13. Four rigid blocks 3 are provided on the top of the rotating annular groove 2 13, and the four rigid blocks 3 correspond to the four connecting inclined grooves 14 respectively.

[0027] The rotating handle 2 has a pin 21 at one end, which is inserted into the mounting hole 11. The bottom end of the pin 21 has a mounting post 22. Rigid members 221 are provided on all four sides of the outer wall of the mounting post 22. One end of the rigid member 221 has an elastic member 222. One end of the elastic member 222 is arc-shaped. The rigid member 221 is located in the rotating annular groove 12 and is in contact with the rigid stop block 3. The elastic member 222 is located in the connecting inclined groove 14 and the arc end of the elastic member 222 is in contact with the arc end of the connecting inclined groove 14.

[0028] Meanwhile, the insert post 21 is hollow, and a spring 4 is installed inside the insert post 21. A connecting plate 41 is installed at the bottom of the spring 4. The connecting plate 41 is connected to the mounting post 22 by bolts and nuts. When the rigid part 221 on the mounting post 22 is broken, it is easy to replace the new mounting post 22 onto the connecting plate 41.

[0029] Furthermore, four slots 131 are provided on the bottom surface of the rotating annular groove 13, and the four slots 131 are located at one end of the four connecting inclined grooves 14 respectively.

[0030] Meanwhile, a locking block 223 is provided at the bottom of the rigid component 221. The locking block 223 is locked in the slot 131 to limit the position of the mounting column 22.

[0031] Meanwhile, four sliding grooves 15 are provided on the inner wall of the mounting hole groove 11. The sliding grooves 15 are connected to the rotating annular groove 12. The elastic element 222 slides upward in the sliding grooves 15 to facilitate the removal of the mounting column 22.

[0032] Furthermore, four sliding grooves 16 are provided on the inner wall of the mounting hole groove 11. The sliding grooves 16 are connected to the rotating annular groove 13. After the rigid member 221 and the elastic member 222 are aligned with the sliding grooves 16, they are inserted into the rotating annular groove 13 to facilitate the installation of the mounting post 22 into the tap body 1.

[0033] In this embodiment, when the tap is tapping and the tap gets stuck, excessive torque will cause the rigid member 221 to impact the rigid stop 3. At this time, the connection between the elastic member 222 and the rigid member 221 will break, and the rigid member 221 will also break from the mounting post 22. At this time, the arc end of the elastic member 222 impacts the arc end of the connecting groove 14, and the elastic member 222 enters the reverse rotating annular groove 12 along the connecting groove 14. At this time, the spring 4 is pulled up, and the mounting post 22 moves down synchronously, so that the torque received by the rotating handle 2 will not be transmitted to the tap body 1, thereby protecting the tap body 1 from breaking. When the operator hears the sound of breaking, the tap driving is stopped.

[0034] At this point, rotate the rotating handle 2 to move the elastic element 222 into the slide groove 15. Then pull the rotating handle 2 upward to remove it. Next, remove the broken rigid element 221 from the tap body 1. Then, tighten the bolt and nut to remove the mounting post from the connecting plate 41. Replace it with a new mounting post 22 and install it onto the connecting plate 4. Then, slide the rigid element 221 and elastic element 222 on the new mounting post 22 into the slide groove 16. Then, rotate the rotating handle 2 to make the mounting post 22 rotate synchronously. The locking block 223 at the bottom of the rigid element 221 is locked into the locking groove 131. The elastic element 222 is located in the connecting inclined groove 14, and the arc end of the elastic element 222 is in contact with the arc end of the connecting inclined groove 14. The rigid element 221 is in contact with the rigid stop 3. The replacement of the mounting post 22 is completed, which facilitates subsequent tapping.

[0035] In this invention, when the tap gets stuck and the torque is too high, the rigid component disconnects from the mounting post and the elastic component. The elastic component enters the rotating annular groove in the connecting groove, and the torque is not transmitted to the tap body, so that the tap body will not break when the torque is too high.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tap breakage prevention device comprising a tap body (1) and a rotating handle (2), characterized in that, The tap body (1) has an installation hole groove (11) at one end. The bottom end of the installation hole groove (11) has a rotating annular groove one (12) and a rotating annular groove two (13). There are four connecting inclined grooves (14) between the rotating annular groove one (12) and the rotating annular groove two (13). The top of the rotating annular groove two (13) is provided with four rigid blocks (3), and the four rigid blocks (3) correspond to the four connecting inclined grooves (14). One end of the rotating handle (2) is provided with a plug (21), which is inserted into the mounting hole groove (11). The bottom end of the plug (21) is provided with a mounting post (22). Rigid members (221) are provided on all four sides of the outer wall of the mounting post (22). One end of the rigid member (221) is provided with an elastic member (222). One end of the elastic member (222) is arc-shaped. The rigid member (221) is located in the rotating annular groove (12) and is in contact with the rigid stop (3). The elastic member (222) is located in the connecting inclined groove (14) and the arc end of the elastic member (222) is in contact with the arc end of the connecting inclined groove (14).

2. A tap breakage prevention device according to claim 1, wherein The insert (21) is hollow, and a spring (4) is installed inside the insert (21). A connecting plate (41) is installed at the bottom of the spring (4). The connecting plate (41) is connected to the mounting post (22) by bolts and nuts.

3. A tap breakage prevention device according to claim 1, wherein The bottom surface of the rotating annular groove 2 (13) is provided with four slots (131), and the four slots (131) are located at one end of the four connecting inclined grooves (14).

4. The tap breakage prevention apparatus of claim 1 wherein, The rigid component (221) has a locking block (223) at its bottom, which is locked in the slot (131).

5. The tap breakage prevention apparatus of claim 1 wherein, The inner wall of the mounting hole groove (11) is provided with four sliding grooves (15), which are connected to the rotating annular groove (12).

6. A tap breakage prevention device according to claim 1, wherein The inner wall of the mounting hole (11) is provided with four sliding grooves (16), which are connected to the rotating annular groove (13).

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