Screw tip screw tap

Abstract

The utility model relates to the technical field of thread machining tools, in particular to a screw tip tap which comprises a screw tip tap body, cutting threads are arranged at one end of the surface of the screw tip tap body, a chip groove is formed between every two adjacent cutting threads, a pipe hole is formed in the surface of the screw tip tap body, and an oil pipe is connected to the surface of the pipe hole in an inserted mode. One end of the oil pipe is fixedly connected with a limiting plate, the bottom end of the limiting plate is fixedly connected with a plurality of clamping blocks, the clamping blocks are embedded in the top end of the tip screw tap body, the other end of the oil pipe is in threaded connection with a fixing box, and the surface of the fixing box is rotationally connected with a plurality of balls; the device has the beneficial effects that the synchronous rotation fixing box is arranged at one end of the screw tip screw tap, the balls are arranged on the surface of the fixing box, and lubricating oil is evenly smeared to the to-be-cut part of a workpiece through hole through the balls, so that the complexity and errors of manual lubrication are reduced, and the cutting efficiency and the machining quality are improved; and lubricating oil in the oil pipe can be conveniently supplemented and replaced, so that different processing tasks can be adapted.

Description

Technical Field

[0001] The utility model relates to the technical field of thread processing tools, in particular to a spiral tip tap. Background Technique

[0002] The spiral tip tap, also known as the lead tap, has high use strength, long service life, fast cutting speed, stable dimensions, and clear thread pattern. It is a deformation of the straight flute tap. An inclined groove is opened on one cutting edge of the straight flute to form an angle, and the chip is discharged forward along the direction of the feed, suitable for through-hole machining.

[0003] In the prior art, the tap is composed 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 to perform the cutting work, and the latter is used to calibrate the size and shape of the thread. In order to reduce the friction between the tap and the workpiece and reduce the cutting force, a layer of lubricating oil is manually applied to the surface of the tap before cutting.

[0004] However, when manually adding lubricating oil, it is difficult to accurately control the amount of lubricating oil added each time, and it is difficult to ensure the uniform distribution of the lubricating oil between the tap and the workpiece. Too little lubricating oil may not provide sufficient lubrication effect, affecting the processing efficiency and quality, while too much oil will affect the surface quality of the workpiece, such as forming oil spots or oil stains. Content of the Utility Model

[0005] The purpose of the utility model is to provide a spiral tip tap to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a spiral tip tap, including a spiral tip tap body. One end of the surface of the spiral tip tap body is provided with a cutting thread, and a chip discharge groove is arranged between adjacent cutting threads. A pipe hole is opened on the surface of the spiral tip tap body, and an oil pipe is inserted into the surface of the pipe hole. One end of the oil pipe is fixedly connected with a limiting plate, and a plurality of clamping blocks are fixedly connected to the bottom end of the limiting plate. The clamping blocks are embedded in the top end of the spiral tip tap body. The other end of the oil pipe is screwed with a fixed box, and a plurality of balls are rotatably connected to the surface of the fixed box.

[0007] Preferably, a limiting groove is opened at the top end of the spiral tip tap body. The limiting groove is a circular groove, and the limiting plate fits on the surface of the limiting groove. The limiting groove communicates with the pipe hole. The pipe hole is a circular hole, and the diameter of the limiting groove is larger than that of the pipe hole. A plurality of clamping grooves are opened on the surface of the limiting groove.

[0008] Preferably, the plurality of clamping grooves are arc grooves distributed in a circumferential array. A baffle is fixedly connected to the surface of the clamping groove. The baffle is in an arc plate-shaped structure. The clamping blocks are embedded in the clamping grooves. The plurality of clamping blocks distributed in a circumferential array are in an arc plate-shaped structure with a cross-section of "L". The baffle abuts against the surface of the clamping block to limit the clamping block.

[0009] Preferably, the fixing box has a disc-shaped structure. A cavity is provided inside the fixing box. Fixing holes are formed on the surface of the fixing box, and the fixing holes communicate with the cavity. A sealing ring is fixedly connected to the surface of the fixing holes, and the sealing ring has an annular structure.

[0010] Preferably, a connecting plate is fixedly connected to the surface of the fixing box. The connecting plate has an annular plate-shaped structure. The connecting plate communicates with the fixing holes, and a threaded groove is provided on the inner wall surface of the connecting plate.

[0011] Preferably, a plurality of ball grooves distributed in a circumferential array are formed on the surface of the fixing box. The ball grooves are spherical grooves, and the ball grooves communicate with the inner cavity of the fixing box. Balls are rotatably connected to the surface of the ball grooves.

[0012] Preferably, one end of the spiral point tap body away from the limiting plate is inserted through and penetrates the surface of the fixing hole. A threaded portion is provided on the surface of one end of the spiral point tap body, and the threaded groove on the inner wall of the connecting plate is threadedly connected to the threaded portion.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. An oil pipe penetrating through is provided inside the spiral point tap body. One end of the oil pipe is provided with a fixing box, and a plurality of balls are provided on the surface of the fixing box. When the spiral point tap rotates, the balls are driven to rub against the surface of the through hole of the workpiece, so that the lubricating oil is evenly applied to the part to be cut of the through hole of the workpiece, reducing the cumbersome process and error of manual lubrication, and improving the cutting efficiency and processing quality.

[0015] 2. One end of the oil pipe is screwed to the connecting plate on the surface of the fixing box, which is convenient for replenishing and replacing the lubricating oil in the oil pipe, and thus adapting to different processing tasks and workpiece materials. The other end of the oil pipe is provided with a clamping block that is clamped with the clamping groove on the surface of the spiral point tap body, which is convenient for disassembling and installing the oil pipe and improving the maintenance efficiency of the lubrication device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic semi-sectional structural diagram of the present utility model;

[0018] Figure 3 is Figure 2 an enlarged schematic view of the structure at A in

[0019] Figure 4 is Figure 2 an enlarged schematic view of the structure at B in

[0020] Figure 5 is a schematic structural diagram of the oil pipe of the present utility model.

[0021] In the figure: 1, the body of the spiral-point tap; 2, the cutting thread; 3, the chip flutes; 4, the oil pipe; 5, the fixed box; 6, the ball; 7, the limit groove; 8, the limit plate; 9, the pipe hole; 10, the ball groove; 11, the connecting plate; 12, the threaded part; 13, the thread groove; 14, the sealing ring; 15, the fixing hole; 16, the clamping block; 17, the clamping groove; 18, the baffle plate. Specific embodiments

[0022] In order to clearly and completely describe the purpose, technical solution of the present utility model and make the advantages more clear, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all of the embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model. Embodiment

[0023] Please refer to Figures 1 to 2 , the present utility model provides a technical solution: a spiral-point tap, including the body 1 of the spiral-point tap. One end of the surface of the body 1 of the spiral-point tap is provided with the cutting thread 2, and chip flutes 3 are arranged between adjacent cutting threads 2. A pipe hole 9 is opened on the surface of the body 1 of the spiral-point tap, and an oil pipe 4 is inserted into the surface of the pipe hole 9. One end of the oil pipe 4 is fixedly connected with a limit plate 8, and a plurality of clamping blocks 16 are fixedly connected to the bottom end of the limit plate 8. The clamping blocks 16 are embedded in the top end of the body 1 of the spiral-point tap. The other end of the oil pipe 4 is screwed to a fixed box 5. A plurality of balls 6 are rotatably connected to the surface of the fixed box 5. A through oil pipe 4 is arranged inside the body 1 of the spiral-point tap. One end of the oil pipe 4 is provided with the fixed box 5, and a plurality of balls 6 are arranged on the surface of the fixed box 5. While the body 1 of the spiral-point tap rotates, it drives the balls 6 to rub against the surface of the through hole of the workpiece, so as to evenly apply the lubricating oil to the part to be cut of the through hole of the workpiece, reducing the tediousness and error of manual lubrication, improving the cutting efficiency and processing quality. One end of the oil pipe 4 is screwed to the connecting plate 11 on the surface of the fixed box 5, which is convenient for replenishing and replacing the lubricating oil in the oil pipe 4, and thus adapting to different processing tasks and workpiece materials. The other end of the oil pipe 4 is provided with a clamping block 16 which is clamped with the clamping groove 17 on the surface of the body 1 of the spiral-point tap, which is convenient for disassembling and installing the oil pipe 4 and improving the maintenance efficiency of the lubrication device. Embodiment

[0024] Please refer to Figure 3, on the basis of the first embodiment, in order to fix and clamp the oil pipe 4, a limiting groove 7 is opened at the top of the spiral tap body 1. The limiting groove 7 is a circular groove, and the limiting plate 8 fits on the surface of the limiting groove 7. The limiting groove 7 communicates with the pipe hole 9. The pipe hole 9 is a circular hole, and the diameter of the limiting groove 7 is larger than that of the pipe hole 9. A plurality of clamping grooves 17 are opened on the surface of the limiting groove 7. The plurality of clamping grooves 17 are arc-shaped grooves distributed in a circumferential array. A baffle 18 is fixedly connected to the surface of the clamping groove 17. The baffle 18 is in an arc-shaped plate structure. The clamping block 16 is embedded in the clamping groove 17. The plurality of clamping blocks 16 distributed in a circumferential array are in an arc-shaped plate structure with an "L" cross-section. The baffle 18 abuts against the surface of the clamping block 16 to limit the clamping block 16.

[0025] Even the limiting groove 7 is provided to make the limiting plate 8 fit in the limiting groove 7 to avoid affecting the connection between the spiral tap body 1 and the machine base. The clamping block 16 is set to be rotationally clamped in the clamping groove 17, and the rotation direction of the clamping block 16 is the same as the processing rotation direction of the spiral tap body 1, so that one end surface of the clamping block 16 is always in fit connection with the clamping groove 17. And a baffle 18 is provided to limit the clamping block 16, which is convenient for the installation and disassembly of the oil pipe 4. Embodiment

[0026] Please refer to Figures 4 to 5 , on the basis of the second embodiment, in order to install a lubricating device on the surface of the spiral tap body 1, the fixed box 5 is in a circular plate structure. A cavity is provided inside the fixed box 5. A fixing hole 15 is opened on the surface of the fixed box 5. The fixing hole 15 communicates with the cavity. A sealing ring 14 is fixedly connected to the surface of the fixing hole 15. The sealing ring 14 is in an annular structure. A connecting plate 11 is fixedly connected to the surface of the fixed box 5. The connecting plate 11 is in an annular plate structure. The connecting plate 11 communicates with the fixing hole 15. A thread groove 13 is provided on the inner wall surface of the connecting plate 11. A plurality of ball grooves 10 distributed in a circumferential array are opened on the surface of the fixed box 5. The ball grooves 10 are spherical grooves. The ball grooves 10 communicate with the inner cavity of the fixed box 5. The balls 6 are rotatably connected to the surface of the ball grooves 10. One end of the spiral tap body 1 away from the limiting plate 8 is inserted and penetrates through the surface of the fixing hole 15. A thread portion 12 is provided on one end surface of the spiral tap body 1. The thread groove 13 on the inner wall of the connecting plate 11 is threadedly connected to the thread portion 12.

[0027] A sealing ring 14 is provided between the oil pipe 4 and the fixed box 5. The sealing ring 14 can closely fit at the connection between the oil pipe 4 and the fixing hole 15, effectively preventing the lubricating oil from leaking out of the connection gap during operation. A plurality of balls 6 are provided. Under the rotation of the spiral point tap body 1, the surface of the balls 6 contacts the surface of the workpiece through-hole and causes the balls 6 to rotate, thereby taking out the lubricating oil in the inner cavity of the fixed box 5 and evenly covering the surface of the workpiece through-hole, realizing more precise lubrication control. A threaded portion 12 is provided on the surface of the connecting plate 11 for energy-saving connection with the threaded groove 13 on the surface of the oil pipe 4, which can realize quick screwing and disassembly of the oil pipe 4 and the fixed box 5, facilitating the addition of lubricating oil into the oil pipe 4.

[0028] During actual use, first insert the oil pipe 4 along the pipe hole 9 from one end of the limit groove 7, align and insert the block 16 on the surface of the limit plate 8 with the card slot 17, then rotate the limit plate 8. The limit plate 8 drives one end of the block 16 to the bottom of the baffle 18, and the baffle 18 presses against the surface of the block 16. Inject lubricating oil into the oil pipe 4, and then screw the connecting plate 11 on the surface of the fixed box 5 with one end of the oil pipe 4. At this time, the sealing ring 14 is squeezed between the fixing hole 15 and the oil pipe 4 to prevent lubricating oil from leaking. Finally, connect the assembled spiral point tap body 1 to the machine base. When the spiral point tap body 1 extends into the workpiece through-hole for rotary machining, the balls will first enter the surface of the workpiece through-hole and friction with it, applying lubricating oil, thereby reducing the frictional resistance, which helps the tap to feed more smoothly during machining, improving the machining efficiency and accuracy.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spiral-point tap, comprising a spiral-point tap body (1), a cutting thread (2) is arranged at one end of the surface of the spiral-point tap body (1), and a chip fluting (3) is arranged between adjacent cutting threads (2), and is characterized in that: The surface of the spiral tip tap body (1) is provided with a pipe hole (9). A fuel pipe (4) is inserted into the surface of the pipe hole (9). One end of the fuel pipe (4) is fixedly connected with a limit plate (8). The bottom end of the limit plate (8) is fixedly connected with a plurality of clamping blocks (16). The clamping blocks (16) are embedded in the top end of the spiral tip tap body (1). The other end of the fuel pipe (4) is screwed with a fixed box (5). A plurality of balls (6) are rotatably connected to the surface of the fixed box (5).

2. A spiral-point tap according to claim 1, characterized in that: A limit groove (7) is opened at the top end of the spiral tip tap body (1). The limit groove (7) is a circular groove. The limit plate (8) is attached to the surface of the limit groove (7). The limit groove (7) communicates with the pipe hole (9). The pipe hole (9) is a circular hole. The diameter of the limit groove (7) is larger than that of the pipe hole (9). A plurality of card slots (17) are opened on the surface of the limit groove (7).

3. A spiral-point tap according to claim 2, wherein: The plurality of card slots (17) are arc-shaped grooves distributed in a circumferential array. A baffle plate (18) is fixedly connected to the surface of the card slot (17). The baffle plate (18) is in an arc-shaped plate structure. The clamping blocks (16) are embedded in the card slots (17). The plurality of clamping blocks (16) distributed in a circumferential array are in an arc-shaped plate structure with an "L" cross-section. The baffle plate (18) abuts against the surface of the clamping blocks (16) to limit the clamping blocks (16).

4. A spiral-point tap according to claim 1, wherein: The fixed box (5) is in a circular plate structure. A cavity is arranged inside the fixed box (5). A fixing hole (15) is opened on the surface of the fixed box (5). The fixing hole (15) communicates with the cavity. A sealing ring (14) is fixedly connected to the surface of the fixing hole (15). The sealing ring (14) is in an annular structure.

5. A spiral-point tap according to claim 4, wherein: A connecting plate (11) is fixedly connected to the surface of the fixed box (5). The connecting plate (11) is in an annular plate structure. The connecting plate (11) communicates with the fixing hole (15). Thread grooves (13) are arranged on the inner wall surface of the connecting plate (11).

6. A spiral-point tap according to claim 1, wherein: A plurality of ball grooves (10) distributed in a circumferential array are opened on the surface of the fixed box (5). The ball grooves (10) are spherical grooves. The ball grooves (10) communicate with the cavity of the fixed box (5). The balls (6) are rotatably connected to the surface of the ball grooves (10).

7. A spiral-point tap according to claim 5, wherein: One end of the spiral tip tap body (1) away from the limit plate (8) is inserted into and penetrates through the surface of the fixing hole (15). A thread portion (12) is arranged on the surface of one end of the spiral tip tap body (1). The thread groove (13) on the inner wall of the connecting plate (11) is threadedly connected with the thread portion (12).

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