Interchangeable side pull s-blade

Abstract

The utility model relates to the technical field of drill bit especially, it is a kind of replaceable side pull S-shaped blade, when using, blade assembly is fixed in installation slot, drill bit main part and blade cooperate to carry out drilling operation to workpiece, waste chip is discharged outside by spiral drainage groove, installation is firm, stress is even, and improve processing precision high;Including drill bit main part, spiral drainage groove and installation slot, the surface of drill bit main part is provided with spiral drainage groove, the first end of drill bit main part is provided with installation slot, further include blade assembly, the blade assembly can be detachably installed on installation slot.

Description

Technical Field

[0001] This utility model relates to the technical field of drill bits, and in particular to replaceable side-pull S-shaped cutting tools. Background Technology

[0002] The drill rod works in conjunction with the drill bit to drill holes in the workpiece. Existing drill bits suffer from low installation stability, poor force uniformity, and low machining accuracy. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a replaceable side-pull S-shaped blade.

[0004] This utility model discloses a replaceable side-pull S-shaped cutting tool, comprising a drill bit body, a spiral discharge groove, and a mounting groove. The surface of the drill bit body is provided with the spiral discharge groove, and the first end of the drill bit body is provided with the mounting groove. It also includes a cutting tool assembly, which is detachably mounted on the mounting groove. In use, the cutting tool assembly is installed and fixed in the mounting groove, and the drill bit body and the cutting tool cooperate to perform drilling operations on the workpiece. Waste chips are discharged through the spiral discharge groove. The installation is firm, the force is even, and the machining accuracy is improved.

[0005] Preferably, the blade assembly includes a blade body, a clamping hole, a threaded hole, a screw, and a countersunk hole. The blade body is provided with a clamping hole, one side of the mounting groove is provided with a threaded hole, and the other side of the mounting groove is provided with a countersunk hole. The screw passes through the countersunk hole and is threadedly connected to the threaded hole. The blade body is adapted to the mounting groove. In use, the blade body is placed into the mounting groove, the clamping hole coincides with the threaded hole and the countersunk hole, and then the screw passes through the countersunk hole and the clamping hole and is threadedly connected to the threaded hole, thereby completing the installation of the blade body and improving the installation firmness.

[0006] Preferably, it also includes a liquid inlet hole, which is provided on the drill bit body; during drilling, the coolant cools the workpiece and the cutting tool body through the liquid inlet hole, thereby improving service life.

[0007] Preferably, the surface of the blade body is provided with a fixed step, the top of the fixed step is provided with an arc-shaped concave surface, the top of the arc-shaped concave surface is provided with an upper cutting edge, the right side of the blade body is provided with a front cutting edge, and the end face is provided with a fixing hole. The fixing hole is a countersunk hole on one side and a threaded hole on the other side, forming an angle of 90 degrees with the blade body, and the center of the fixing hole and the blade hole are offset downward by 0.2mm.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: When in use, the blade assembly is installed and fixed in the mounting groove, the drill body and the blade cooperate to perform drilling operation on the workpiece, and the waste chips are discharged through the spiral discharge groove. The installation is firm, the force is uniform, and the processing accuracy is high. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0010] Figure 2 This is an exploded structural diagram of the present invention;

[0011] Figure 3 This is a partial cross-sectional structural diagram of the present invention.

[0012] The following are labels in the attached diagram: 1. Drill bit body; 2. Spiral chip removal groove; 3. Mounting groove; 4. Cutting tool body; 5. Clamping hole; 6. Threaded hole; 7. Screw; 8. Countersunk hole; 9. Liquid inlet hole. Detailed Implementation

[0013] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example

[0014] like Figure 1 and Figure 2 As shown, the replaceable side-pull S-shaped cutting tool of this utility model includes a drill bit body 1, a spiral discharge groove 2 and a mounting groove 3. The surface of the drill bit body 1 is provided with the spiral discharge groove 2, and the first end of the drill bit body 1 is provided with the mounting groove 3. It also includes a cutting tool assembly, which is detachably mounted on the mounting groove 3.

[0015] The blade assembly includes a blade body 4, a clamping hole 5, a threaded hole 6, a screw 7, and a countersunk hole 8. The blade body 4 is provided with a clamping hole 5, a threaded hole 6 is provided on one side of the mounting groove 3, and a countersunk hole 8 is provided on the other side of the mounting groove 3. The screw 7 passes through the countersunk hole 8 and is threadedly connected to the threaded hole 6. The blade body 4 is adapted to the mounting groove 3.

[0016] It also includes a liquid inlet hole 9, which is provided on the drill bit body 1;

[0017] The surface of the blade body 4 is provided with a fixed step, the top of the fixed step is provided with an arc-shaped concave surface, the top of the arc-shaped concave surface is provided with an upper cutting edge, the right side of the blade body 4 is provided with a front cutting edge, and the end face is provided with a fixing hole. The fixing hole is a countersunk hole on one side and a threaded hole on the other side. The angle formed with the blade body 4 is 90 degrees, and the center of the fixing hole and the blade hole is offset downward by 0.2mm.

[0018] In this embodiment, the blade body 4 is placed in the mounting groove 3, the clamping hole 5 coincides with the threaded hole 6 and the countersunk hole 8, and then the screw 7 passes through the countersunk hole 8 and the clamping hole 5 and is threadedly connected to the threaded hole 6, thereby completing the installation of the blade body 4. The drill body 1 and the blade cooperate to perform drilling operations on the workpiece, and the waste chips are discharged through the spiral discharge groove 2. The installation is firm, the force is uniform, and the machining accuracy is high.

[0019] The replaceable side-pull S-shaped blade of this utility model has positioning steps on both end faces of the mounting part, which are symmetrical to each other. The blade part includes a side blade and a main blade. The included angle of the side blade is 100 degrees. The main blade is located at the end of the blade head. The back of the main blade is flat and the front is concave arc. Those skilled in the industry only need to follow the accompanying instruction manual for installation and operation, without requiring creative work from those skilled in the art.

[0020] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A replaceable side-pull S-shaped cutting tool, comprising a drill bit body (1), a spiral discharge groove (2), and a mounting groove (3), wherein the surface of the drill bit body (1) is provided with the spiral discharge groove (2), and the first end of the drill bit body (1) is provided with the mounting groove (3), characterized in that, It also includes a blade assembly that is detachably mounted on a mounting slot (3).

2. The replaceable side-lowering S-blade of claim 1, wherein The blade assembly includes a blade body (4), a clamping hole (5), a threaded hole (6), a screw (7), and a countersunk hole (8). The blade body (4) is provided with a clamping hole (5), a threaded hole (6) is provided on one side of the mounting groove (3), and a countersunk hole (8) is provided on the other side of the mounting groove (3). The screw (7) passes through the countersunk hole (8) and is threadedly connected to the threaded hole (6). The blade body (4) is adapted to the mounting groove (3).

3. The replaceable side-lowering S-blade of claim 1, wherein It also includes a liquid inlet hole (9), which is provided on the drill bit body (1).

4. The replaceable side-lowering S-blade of claim 2, wherein The surface of the blade body (4) is provided with a fixed step, the top of the fixed step is provided with an arc-shaped concave surface, the top of the arc-shaped concave surface is provided with an upper cutting edge, the right side of the blade body (4) is provided with a front cutting edge, and the end face is provided with a fixing hole. The fixing hole is a countersunk hole on one side and a threaded hole on the other side. The angle formed with the blade body (4) is 90 degrees and the center of the fixing hole and the blade hole is offset downward by 0.2mm.

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