Novel screw tap

Abstract

The utility model relates to a novel screw tap which comprises a screw tap body, a plurality of edge strips are machined on the circumferential surface of the screw tap body around the rotating axis of the screw tap body, the edge strips are evenly distributed at equal angles, and screw tap teeth are machined on the outer surfaces of the edge strips. The distance between every two adjacent screw tap teeth located on the same edge belt is not smaller than the width of one screw tap tooth, and the screw tap teeth located on every two adjacent edge belts are distributed in a staggered mode. The screw tap has the effects that the cutting resistance of the screw tap is reduced, and the possibility that the screw tap is broken and damaged is reduced.

Description

Technical Field

[0001] The present application relates to the field of tap technology, and in particular to a new type of tap. Background Art

[0002] A tap is a tool used to process internal threads. It can be divided into straight groove taps, spiral groove taps, etc. It has the advantage of good processing performance and is widely used in the field of internal thread processing.

[0003] With respect to the above-mentioned related technologies, the inventors believe that the tap teeth on the existing taps have a small spacing, resulting in large cutting resistance, which makes the taps easy to break. Summary of the invention

[0004] In order to reduce the resistance of the tap during cutting and lower the possibility of the tap being broken or damaged, the present application provides a new tap.

[0005] The new tap provided in this application adopts the following technical solution:

[0006] A new type of tap comprises a tap body, a plurality of cutting bands are formed on the circumferential surface of the tap body around the rotation axis of the tap body, the plurality of cutting bands are evenly distributed at equal angles, tap teeth are formed on the outer surface of the cutting bands, the spacing between two adjacent tap teeth on the same cutting band is not less than the width of one tap tooth, and the tap teeth on two adjacent cutting bands are staggeredly distributed.

[0007] By adopting the above technical solution, by reasonably increasing the distance between two adjacent tap teeth, the tap teeth on the same blade are distributed in a jumping manner, and the offset and complementary tap teeth can ensure the precise processing of the workpiece. Under the premise of not interfering with the tap body in processing the workpiece, the resistance encountered by the tap body during processing is effectively reduced, thereby reducing the possibility of the tap body being broken and damaged during the rotating working process, effectively improving the use strength of the tap body and extending the service life of the tap body.

[0008] Optionally, an end edge is machined on the front end face of the cutting edge.

[0009] By adopting the above technical solution, the tap body can be accurately positioned and cut on the workpiece.

[0010] Optionally, a chip removal groove is formed between two adjacent cutting edges.

[0011] Optionally, one end of the chip removal groove is connected to an end surface of the tap body provided with an end cutting edge.

[0012] By adopting the above technical solution, it is beneficial for cutting chips to be discharged through the chip discharge groove.

[0013] Optionally, the tap further comprises a shank integrally formed and connected to an end of the tap body away from the end cutting edge;

[0014] One end of the chip discharge groove away from the end edge is connected to the peripheral surface of the shank.

[0015] By adopting the above technical solution, it is further facilitated for the cutting chips to be discharged through the chip discharge groove.

[0016] Optionally, the depth of the slot of a section of the chip removal groove connected to the shank gradually becomes shallower from the end edge to the shank, and the slot gradually narrows.

[0017] By adopting the above technical solution, the discharge of cutting chips is further facilitated while the heat dissipation performance of the tap body is effectively improved.

[0018] Optionally, the handle is composed of a detachably connected connection section and a reserved section;

[0019] The tap also includes a threaded barrel which is threadedly connected and sleeved on the connecting section and the reserved section.

[0020] By adopting the above technical solution, it is convenient to replace the tap body that needs to be replaced after long-term work.

[0021] Optionally, a first clamping block is integrally formed on the end surface of the connecting section, and a second clamping block capable of engaging with the first clamping block is integrally formed on the end surface of the reserved section.

[0022] By adopting the above technical solution, the detachably connected handle can be strengthened to form a stable connection, while the axial resistance borne by the handle can be reduced, thereby improving the reliability of the tap.

[0023] Optionally, a limiting block capable of being inserted into the interior of the second blocking block is integrally formed on the first blocking block, and the length direction of the limiting block is parallel to the rotation axis of the handle.

[0024] By adopting the above technical solution, during the process of replacing the tap body, the limit block can pre-fix the two blocks after being inserted. After the threaded barrel is screwed out of the two blocks, the two blocks are not easy to separate, thereby facilitating the disassembly of the handle.

[0025] Optionally, a limiting groove is fixedly provided on the outer wall of the connecting section, a gasket is embedded in the limiting groove, and the threaded tube can be pressed against the gasket and the limiting groove at the same time.

[0026] By adopting the above technical solution, the threaded barrel can be restricted, and when the threaded barrel is pressed against the gasket, the connection stability of the threaded barrel can be enhanced.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. By setting the tap body, blade and tap teeth, the distance between two adjacent tap teeth is reasonably increased, so that the tap teeth are distributed in a jumping manner. The offset and complementary tap teeth can ensure the precise processing of the workpiece, effectively reduce the resistance of the tap body during processing, and thus reduce the possibility of the tap body being broken and damaged during the rotating process;

[0029] 2. By setting the depth of the chip groove to gradually become shallower and the groove to gradually narrow, it is further conducive to the discharge of cutting chips and effectively improves the heat dissipation performance of the tap body;

[0030] 3. By providing the first clamping block and the second clamping block, the detachably connected handle can be strengthened to form a stable connection, and the axial resistance borne by the handle can be reduced, thereby improving the reliability of the tap. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of the new tap in the first embodiment.

[0032] Figure 2 It is a schematic diagram of the structure of the new tap in the second embodiment.

[0033] Figure 3 It is a schematic diagram of the cross-sectional structure of the detachable connecting part of the handle.

[0034] Figure 4 It is a schematic diagram of the structure after the handle is disassembled.

[0035] Explanation of the reference numerals: 1. tap body; 11. blade band; 12. tap teeth; 13. end blade; 14. chip groove; 2. shank; 21. first clamping block; 22. second clamping block; 23. limit block; 24. slot; 3. threaded barrel; 4. limit groove; 5. washer. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-4 , further details of this application are given.

[0037] Embodiment 1

[0038] The present application embodiment discloses a new type of tap, referring to Figure 1 The tap comprises a tap body 1 and a handle 2 integrally formed and connected with the tap body 1 .

[0039] Reference Figure 1Four cutting edges 11 are formed on the circumference of the tap body 1 at equal angles around the rotation axis of the tap body 1, and the length direction of the cutting edge 11 is parallel to the rotation axis of the tap body 1. A plurality of tap teeth 12 are provided along the length direction of the cutting edge 11, and the plurality of tap teeth 12 are evenly distributed at equal intervals, and the interval between two adjacent tap teeth 12 on the same cutting edge 11 is not less than the width of the tap teeth 12, so that the tap teeth 12 on the same cutting edge 11 are arranged in a jumping manner, and the tap teeth 12 on two adjacent cutting edges 11 are arranged in a staggered manner.

[0040] While effectively controlling the number of teeth, the offset tap teeth 12 can complement each other, which can not only accurately process the workpiece, but also significantly reduce the axial resistance of the tap body 1 and the possibility of damage and breakage of the tap body 1. It is also beneficial to improve the heat dissipation performance of the tap body 1 and effectively extend the service life.

[0041] Reference Figure 1 An end edge 13 is formed at one end of the cutting edge 11 away from the shank 2. The end edge 13 can improve the positioning accuracy of the tap body 1 when processing the workpiece. A chip groove 14 is provided between two adjacent cutting edges 11. The length direction of the chip groove 14 is parallel to the rotation axis of the tap body 1, and the length of the chip groove 14 is greater than the length of the cutting edge 11. One end of the chip groove 14 is connected to one end of the tap body 1 provided with the end edge 13, and the other end of the chip groove 14 is connected to the peripheral surface of the shank 2. The chip groove 14 is located in a section of the shank 2, and the depth of the groove gradually becomes shallower from the tap body 1 to the shank 2, and the groove of this section gradually narrows, which is conducive to the discharge of cutting chips.

[0042] Embodiment 2

[0043] The difference between this embodiment and the first embodiment is that:

[0044] Combination Figure 2 and Figure 3 The handle 2 is composed of a detachably connected connecting section and a reserved section, and the connecting section is integrally connected to the tap body 1. A first clamping block 21 is integrally provided on the end surface of the connecting section away from the tap body 1, and a second clamping block 22 is integrally provided on the end surface of the reserved section. Both the first clamping block 21 and the second clamping block 22 are L-shaped clamping blocks, and the two can be buckled with each other.

[0045] Combination Figure 3 and Figure 4 The first clamping block 21 is integrally formed with a limit block 23, and the second clamping block 22 is provided with a slot 24 for the limit block 23 to be inserted into, and the limit block 23 is adapted to the slot 24. The limit block 23 is a bar-shaped block, and the length direction of the limit block 23 is parallel to the rotation axis of the handle 2. After the limit block 23 is inserted into the limit slot 4, the first clamping block 21 and the second clamping block 22 are buckled at the same time.

[0046] Combination Figure 3 and Figure 4 Threads are processed on the circumference of the connecting section and the reserved section and on the outer walls of the first block 21 and the second block 22. The tap also includes a threaded barrel 3 threadedly connected to the shank 2, and the threaded barrel 3 can be threadedly connected to the shank 2, the first block 21 and the second block 22 at the same time. The length of the threaded barrel 3 is less than the length of the threads on the shank 2 and the block, so that the threaded barrel 3 will not fall off the shank 2. The length of the threaded barrel 3 is greater than the length of the first block 21, so that the threaded barrel 3 can cover and hide the block.

[0047] Combination Figure 3 and Figure 4 A limiting groove 4 is fixedly sleeved on the outer wall of the connecting section, the notch of the limiting groove 4 faces away from the tap body 1, and a washer 5 is embedded in the limiting groove 4. The washer 5 is made of a flexible material, such as rubber, plastic, etc., and has elasticity. After the threaded barrel 3 is connected to the clamping block, the threaded barrel 3 is continuously screwed so that the threaded barrel 3 is pressed against the washer 5. The elastic washer 5 can apply a reverse force to the threaded barrel 3, so that the threaded barrel 3 can be more firmly connected to the clamping block and the handle 2.

[0048] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A new tap, characterized by: The invention comprises a tap body (1), a plurality of cutting bands (11) are machined and formed on the circumference of the tap body (1) around the rotation axis of the tap body (1), the plurality of cutting bands (11) are evenly distributed at equal angles, tap teeth (12) are machined and formed on the outer surface of the cutting band (11), the spacing between two adjacent tap teeth (12) on the same cutting band (11) is not less than the width of one tap tooth (12), and the tap teeth (12) on two adjacent cutting bands (11) are staggered and distributed.

2. A new tap according to claim 1, characterized in that: An end edge (13) is machined and formed on the front end surface of the blade band (11).

3. A new tap according to claim 2, characterized in that: A chip removal groove (14) is formed between two adjacent cutting edges (11).

4. A new tap according to claim 3, characterized in that: One end of the chip removal groove (14) is connected to the end surface of the tap body (1) provided with the end blade (13).

5. A new tap according to claim 4, characterized in that: The tap further comprises a shank (2) integrally formed and connected to an end of the tap body (1) away from the end blade (13); One end of the chip removal groove (14) away from the end edge (13) is connected to the peripheral surface of the shank (2).

6. A new tap according to claim 5, characterized in that: The depth of the slot of the chip removal groove (14) in the section connected to the shank (2) gradually becomes shallower in the direction from the end edge (13) to the shank (2), and the slot gradually narrows.

7. A new tap according to claim 5 or 6, characterized in that: The handle (2) is composed of a detachably connected connecting section and a reserved section; The tap also includes a threaded barrel (3) which is threadedly connected and sleeved on the connecting section and the reserved section.

8. The new tap according to claim 7, characterized in that: A first clamping block (21) is integrally formed on the end surface of the connecting section, and a second clamping block (22) capable of engaging with the first clamping block (21) is integrally formed on the end surface of the reserved section.

9. The new tap according to claim 8, characterized in that: A limiting block (23) capable of being clamped into the interior of the second clamping block (22) is integrally formed on the first clamping block (21), and the length direction of the limiting block (23) is parallel to the rotation axis of the handle (2).

10. The new tap according to claim 1, characterized in that: A limiting groove (4) is fixedly provided on the outer wall of the connecting section, a washer (5) is embedded in the limiting groove (4), and the threaded barrel (3) can be pressed against the washer (5) and the limiting groove (4) at the same time.

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