Multi-step screw tap

Abstract

The utility model relates to the technical field of screw taps, in particular to a multi-step screw tap which comprises a multi-step screw tap body, the multi-step screw tap body is composed of a handle portion and a working portion, the working portion comprises a plurality of cutting pieces and a chip containing groove, connecting pieces are arranged among the cutting pieces, and a positioning piece and a cooling mechanism are arranged at one end of the cutting piece at the top end. Comprising a sliding ring arranged outside a handle part in a sleeving mode, two retainers are arranged in the sliding ring, a plurality of balls are distributed on the inner circumferences of the retainers, a communicating assembly is arranged on one side of the sliding ring, and through cooperation of a plurality of water conveying grooves, connecting grooves and the communicating assembly which are formed in a multi-step screw tap body, water can be evenly distributed to the working portion of the screw tap; the stable performance of the screw tap can be ensured through uniform cooling, so that the frequency of replacing the screw tap is reduced, the cost is reduced, the machining efficiency is improved, water supply and control are more convenient and flexible through cooperation of the water valve and the connecting pipeline, and the water flow can be flexibly adjusted under different machining working conditions to achieve the optimal cooling effect.

Description

Technical Field

[0001] The utility model relates to the technical field of taps, in particular to a multi-step tap. Background Technique

[0002] A tap is a tool used to machine internal threads on a workpiece. The structure of a tap usually includes a cutting part, a calibration part, and a shank. The cutting part undertakes the important task of removing materials and forming the thread profile. The calibration part is used to calibrate and trim the cut threads to ensure the dimensional accuracy and surface quality of the threads. The shank is used to mount the tap on a tapping tool, such as a manual tap wrench or a machine tool spindle. According to the thread standards and specifications, taps can be divided into metric taps, imperial taps, etc.

[0003] The utility model patent with the publication number of CN216607534U discloses a multi-step tap and a tap wrench, including a tap rod, a front cone, cutting edges, and chip flutes. By setting cutting segments with different diameters on the tap rod, multiple specifications of threads can be machined with the same tap, thereby reducing the switching of taps during the machining process and improving the machining efficiency.

[0004] In the above existing patents, when the tap is being machined, a large torque is required for tapping. During long-term continuous machining, the friction between the tap and the workpiece will increase, resulting in excessive heat generation, causing the tap temperature to be too high, which affects its hardness and service life. Content of the Utility Model

[0005] In view of the technical problem that the heat generated during the machining of the tap causes the tap temperature to be too high, affecting the hardness and service life of the tap, the utility model provides the following technical solutions:

[0006] A multi-step tap includes a multi-step tap body, which is composed of a shank and a working part. The working part includes a plurality of cutting parts and chip flutes. A connecting part is arranged between the plurality of cutting parts, and a positioning part is arranged at one end of the top cutting part.

[0007] A temperature reduction mechanism includes a sliding ring sleeved outside the shank. Two cages are arranged inside the sliding ring, and a plurality of balls are circumferentially distributed inside the cages. A connecting component is arranged on one side of the sliding ring.

[0008] Preferably, two sealing rings are arranged between the two cages inside the sliding ring, and the sealing rings are tightly connected to the shank.

[0009] Preferably, the connecting component is composed of a connecting pipe and a water valve. The connecting pipe is communicatively arranged at one end of the sliding ring, and the water valve is sleeved on the connecting pipe.

[0010] Preferably, a plurality of water channels are formed in the multi-stage tap body, and a connecting groove is arranged at one end of the water channel.

[0011] Preferably, anti-chip nets are arranged at the other ends of the plurality of water channels.

[0012] Preferably, the connecting groove is arranged in a loop shape in the handle portion, and one end of the connecting groove is communicated with the connecting pipe.

[0013] Advantages of the present utility model:

[0014] 1. Through the cooperation of the plurality of water channels, connecting grooves and communication components formed in the multi-stage tap body, water can be evenly distributed to the working parts of the tap. Uniform cooling can ensure the stable performance of the tap, thereby reducing the frequency of tap replacement, reducing costs, improving processing efficiency, and through the cooperation of the water valve and the connecting pipe, the supply and control of water are more convenient and flexible, and the water flow can be flexibly adjusted under different processing conditions to achieve the best cooling effect.

[0015] 2. The setting of the sealing ring ensures the tight connection between the sliding ring and the handle portion, preventing liquid from leaking into the ball, causing the ball to rust and affecting the use of the cooling mechanism.

[0016] 3. The setting of the anti-chip net can prevent chips from entering the water channel, ensure smooth water flow, and effectively avoid affecting the cooling effect due to chip blockage of the water channel. Description of the drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings. Among them:

[0018] Figure 1 It is the overall structure schematic diagram of the present utility model.

[0019] Figure 2 It is the internal structure schematic diagram of the sliding ring of the present utility model.

[0020] Figure 3 It is the sectional structure schematic diagram at the sliding ring of the present utility model.

[0021] Figure 4 It is the partial structure schematic diagram at the positioning member of the present utility model.

[0022] Explanation of the reference numerals:

[0023] 1. Multi-stage tap body; 11. Shank; 12. Working part; 121. Cutting piece; 122. Chip flutes; 123. Connecting piece; 124. Positioning piece; 2. Cooling mechanism; 21. Sliding ring; 22. Cage; 23. Ball; 24. Sealing ring; 3. Connecting component; 31. Connecting pipe; 32. Water valve; 33. Water delivery groove; 34. Connecting groove; 35. Chip guard net. Detailed implementation mode

[0024] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following will give a detailed description of the specific implementation mode of the present utility model in conjunction with the drawings in the specification. Embodiment

[0025] Refer to Figures 1-4 , a multi-stage tap is provided, including a multi-stage tap body 1. The multi-stage tap body 1 is composed of a shank 11 and a working part 12. The working part 12 includes a plurality of cutting pieces 121 and chip flutes 122. A connecting piece 123 is arranged between the plurality of cutting pieces 121. One end of the top cutting piece 121 is provided with a positioning piece 124. The positioning piece 124 facilitates the positioning of the machining position, ensuring the accuracy of machining. And the positioning piece 124 can provide support during machining, reducing the vibration and shaking of the tap, making its operation more stable, and being able to bear a part of the cutting force, reducing the load of the tap itself and prolonging the service life of the tap.

[0026] Furthermore, the connecting component 3 is composed of a connecting pipe 31 and a water valve 32. The connecting pipe 31 is threadedly connected to one end of the sliding ring 21, facilitating the disassembly of the connecting pipe 31. The water valve 32 is fixedly sleeved on the connecting pipe 31. The water valve 32 can flexibly control the water flow in the connecting pipe 31 according to different machining requirements. When the multi-stage tap body 1 is machining, the output end of the connecting pipe 31 is connected to a water source, and the water valve 32 is opened, and the water source flows into the sliding ring 21 through the connecting pipe 31.

[0027] Further, the cooling mechanism 2 includes a sliding ring 21 sleeved outside the handle 11, two cages 22 horizontally arranged inside the sliding ring 21, and a plurality of balls 23 evenly distributed at equal circumferential intervals inside the cages 22. The cages 22 ensure the stability of the balls 23 when rolling inside the sliding ring 21. Lubricant is applied on the balls 23, which can maintain the good rolling performance of the balls 23 and reduce friction. Through the cooperation of the balls 23 and the sliding ring 21, when the multi-stage tap body 1 is being processed, while the multi-stage tap body 1 rotates, the sliding ring 21 remains fixed, so that the cooling mechanism 2 will not be affected during operation. Two sealing rings 24 are horizontally arranged at equal intervals between the two cages 22 inside the sliding ring 21. The sealing rings 24 are adhesively connected to the inner end of the sliding ring 21 and are tightly connected to the handle 11. The section of the handle 11 inside the sliding ring 21 is in an arc structure, so that an accommodation cavity is formed between the tight connection of the sealing ring 24 and the handle 11. When the above-mentioned water source flows into the accommodation cavity inside the sliding ring 21, the tight connection between the sealing ring 24 and the handle 11 prevents the water source from flowing into the balls, which will dilute the lubricant, reduce the lubrication effect, increase the friction between the balls 23 and the sliding ring 21 and the handle 11, affect the normal operation of the components, and easily cause the balls to rust, affecting the use of the cooling mechanism.

[0028] Further, a plurality of water channels 33 are opened inside the multi-stage tap body 1. One end of the water channel 33 is provided with a connection groove 34, and the connection groove 34 is arranged in a loop inside the handle 11. By arranging the connection groove 34 in a loop, water can flow evenly into the plurality of water channels 33, ensuring that the temperature of each part is constant when the multi-stage tap body 1 is being processed, and preventing the shortening of the service life of the multi-stage tap body 1 due to different temperatures at each position. Moreover, a notch is opened on the handle 11, and one end of the connection groove 34 is connected to the connecting pipe 31 through the notch. Anti-chip nets 35 are fixedly arranged at the other ends of the plurality of water channels 33, which can prevent chips from entering the water channels 33, ensure smooth water flow, and effectively avoid affecting the cooling effect due to chip blockage of the water channels 33. The anti-chip nets 35 are bolted to the positioning members 124, which facilitates the disassembly of the anti-chip nets 35 and timely cleaning of the inside of the water channels 33 to ensure smooth water flow in the water channels 33. Threaded holes are opened on both the positioning members 124 and the anti-chip nets 35, and a receiving groove is opened at one end of the threaded hole on the anti-chip net 35, and the bolt head is arranged in the receiving groove, ensuring that the positioning members 124 can be normally processed without being affected. Then, after the water source flows into the accommodation cavity, it flows into the connection groove 34 through the notch, and then flows to the processing area through the water channels 33 connected by the connection groove 34 to cool the multi-stage tap body 1 and the processing area, ensuring the stable performance of the multi-stage tap body 1.

[0029] The operating principle of the present utility model is as follows:

[0030] Before processing the multi-step tap body 1, connect the output end of the connecting pipe 31 to a water source. Then, when processing the multi-step tap body 1, multiple balls 23 drive the cage 22 to roll within the sliding ring 21 and the shank 11. At the same time, the sliding ring 21 is in a fixed state. Then, according to the processing requirements, open the water valve 32 sleeved on the connecting pipe 31 to control the water flow rate in the connecting pipe 31 to achieve the best cooling effect. Then, the water source flows through the connecting pipe 31 into the accommodating cavity formed by the tight connection between the sealing ring 24 and the shank 11. Next, after the accommodating cavity is filled with water, through the notch provided between the connecting groove 34 and the connecting pipe 31, the water flows into the connecting groove 34 and evenly flows into multiple water channels 33 through the connecting groove 34, and then flows to the positioning member 124 through the chip guard 35 provided at the other end of the water channel 33 to cool the processing part and the multi-step tap body 1, ensuring the working efficiency of the processing.

[0031] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A multi-stage tap, comprising a multi-stage tap body (1), the multi-stage tap body (1) being composed of a shank portion (11) and a working portion (12), the working portion (12) including a plurality of cutting members (121) and chip flutes (122), characterized in that, A connecting member (123) is arranged between multiple of the cutting members (121), and a positioning member (124) is arranged at one end of the topmost cutting member (121). A cooling mechanism (2), comprising a sliding ring (21) sleeved outside the shank (11), two cages (22) are arranged inside the sliding ring (21), a plurality of balls (23) are circumferentially distributed inside the cages (22), and a connecting assembly (3) is arranged on one side of the sliding ring (21).

2. A multi-stage tap according to claim 1, characterized in that, Two sealing rings (24) are arranged inside the sliding ring (21) between the two cages (22), and the sealing rings (24) are tightly connected to the shank (11).

3. A multi-stage tap according to claim 1, characterized in that, The connecting assembly (3) is composed of a connecting pipe (31) and a water valve (32), the connecting pipe (31) is communicatively arranged at one end of the sliding ring (21), and the water valve (32) is sleeved on the connecting pipe (31).

4. The multi-step tap according to claim 3, characterized in that, A plurality of water channels (33) are formed inside the multi-stage tap body (1), and a connecting groove (34) is arranged at one end of the water channels (33).

5. A multi-stage tap according to claim 4, characterized in that, Anti-chip nets (35) are arranged at the other ends of the plurality of water channels (33).

6. A multi-step tap according to claim 4, characterized in that, The connecting groove (34) is arranged in a loop shape inside the shank (11), and one end of the connecting groove (34) is communicated with the connecting pipe (31).

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