A swarf cutting structure for a drill

Abstract

This utility model discloses a chip cutting structure for a drilling machine, including an annular anvil, a downward-facing annular blade, a worktable, and a drill bit mounting base mounted on the worktable. The drill bit mounting base is equipped with a drill bit chuck. The drill bit used for drilling is a twist drill, and the drill bit has a spiral groove on its circumference. The anvil is connected to the lower ends of several suspension rods. The upper ends of the suspension rods pass through the drill bit chuck and are equipped with suspension blocks to prevent the suspension rods from falling off the drill bit chuck. The annular blade is located directly above the annular anvil and is connected to the drill bit chuck via a lifting structure. During drilling, the drill bit passes through the annular anvil and the annular blade, and the annular anvil rests on the worktable. This utility model aims to provide a drilling machine with a chip cutting structure that can prevent excessively long chips from tangling, solving the problem of excessively long chips interfering with drilling when using a twist drill in existing drilling machines.

Description

Technical Field

[0001] This utility model relates to the field of drilling technology, and in particular to a chip cutting structure for a drilling machine. Background Technology

[0002] A milling and drilling machine can complete two different processes—drilling and milling—by changing the cutting tool at the machine head. For example, a milling device for metal signs disclosed in Chinese patent document CN202411524000.1 includes a worktable, a movable structure mounted on the worktable, a switching structure mounted on the movable structure, a disassembly structure mounted on the switching structure, a rotating structure mounted on the movable structure, a clamping structure, a lifting structure, and a cleaning structure installed inside the worktable. Through the movable structure mounted on the worktable, different positions of the metal sign can be milled. At the same time, through the switching structure, drilling can be performed on the metal sign after milling. The disassembly structure facilitates the replacement of the milling cutter and drill bit, and the rotating structure can automatically adjust the position of the switching structure.

[0003] The drawback of existing technology is that when drilling with a twist drill, the resulting iron filings are long and easily become entangled, interfering with the drilling operation. Utility Model Content

[0004] The present invention aims to provide a drilling machine with a cutting structure that can prevent iron filings from tangling due to excessive length, thus solving the problem that excessively long iron filings interfere with drilling when drilling with a twist drill in existing drilling machines.

[0005] The above technical problems are solved by the following technical solution: a chip cutting structure for a drilling machine, including a worktable and a drill bit mounting base set on the worktable, the drill bit mounting base is provided with a drill bit clamp, the drill bit used for drilling is a twist drill, the drill bit has a spiral groove on its circumferential surface, characterized in that it also includes an annular anvil and an annular blade with the cutting edge facing downward, the anvil is connected to the lower end of several suspension rods, the upper end of the suspension rods passes through the drill bit clamp and is provided with a suspension block to prevent the suspension rods from falling off the drill bit clamp, the annular blade is located directly above the annular anvil, the annular blade is connected to the drill bit clamp through a lifting structure, the drill bit passes through the annular anvil and the annular blade during drilling, and the annular anvil rests on the worktable. During drilling, as the drill bit descends, the annular anvil first contacts the workpiece, and then the drill bit continues to contact the workpiece to drill a hole. The resulting filamentous iron filings are output from the spiral groove and spread on the annular anvil. When the length of the iron filings reaches the set length, the lifting structure drives the annular blade to descend, and the annular blade, in conjunction with the annular anvil, cuts the iron filings. This prevents excessively long iron filings from interfering with the drilling process.

[0006] Preferably, when the annular anvil is suspended from the drill chuck by a suspension block, the annular anvil faces downwards and extends beyond the drill bit. This avoids the formation of iron filings that could interfere with the placement of the annular anvil on the workpiece.

[0007] Preferably, the lifting structure includes a connecting ring, a plurality of lifting cylinders connecting the connecting ring to the drill bit chuck, and a plurality of lifting rods suspending the annular cutting edge below the connecting ring. The drill bit passes through the connecting ring, and the lifting cylinders and lifting rods are distributed circumferentially along the connecting ring. This provides convenience when connecting the cylinders.

[0008] Preferably, the drill bit has a helical groove on its circumference, and the annular cutting blade has an annular suspension groove with its opening facing upward and coaxial with the drill bit. A lifting block is provided at the lower end of the lifting rod, and the lifting block is located within the annular groove to suspend the annular cutting blade. The annular cutting blade is fixed to one end of the drive rod, and the other end of the drive rod passes through the helical groove. When the annular cutting blade cuts into metal chips, the rotation of the drill bit drives the annular cutting blade to rotate, thereby cutting the metal chips and improving the reliability of the annular cutting blade in cutting metal chips.

[0009] Beneficial effect: It can cut off the iron filings generated during drilling, preventing them from becoming entangled and interfering with the drilling process. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 yes Figure 1 A magnified view of a portion of point B.

[0012] In the diagram: 1. Cutting tool; 2. Workbench; 7. Drill chuck; 10. Annular anvil; 11. Cutting edge; 12. Annular blade; 13. Suspension rod; 14. Suspension block; 15. Lifting structure; 16. Drill bit; 17. Workpiece; 18. Connecting ring; 19. Lifting cylinder; 20. Hanging rod; 21. Spiral groove; 22. Hanging block; 23. Drive rod. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0014] join Figure 1 and Figure 2A chip cutting structure for a drilling machine includes a worktable 2 and a drill bit mounting base disposed on the worktable. The drill bit mounting base is equipped with a drill bit chuck 7. The drill bit 16 used for drilling is a twist drill with a spiral groove 21 on its circumferential surface. It also includes an annular anvil 10 and an annular blade 12 with its cutting edge 11 facing downwards. The anvil is connected to the lower ends of several suspension rods 13. The upper ends of the suspension rods pass through the drill bit chuck 7 and are equipped with suspension blocks 14 to prevent the suspension rods from falling off the drill bit chuck. The annular blade is located directly above the annular anvil. The annular blade is connected to the drill bit chuck via a lifting structure 15. During drilling, the drill bit 16 passes through the annular anvil and the annular blade. The annular anvil rests on the workpiece 17 on the worktable 2. During drilling, as the drill bit descends, the annular anvil first contacts the workpiece, and then the drill bit continues to contact the workpiece to drill a hole. The resulting filamentous iron filings are output from the spiral groove and spread on the annular anvil. When the length of the iron filings reaches the set length, the lifting structure drives the annular blade to descend, and the annular blade, in conjunction with the annular anvil, cuts the iron filings. This prevents excessively long iron filings from interfering with drilling. When the annular anvil is suspended from the drill chuck by a suspension block, the annular anvil extends downwards beyond the drill bit. This prevents iron filings from being generated first and interfering with the placement of the annular anvil on the workpiece. The lifting structure includes a connecting ring 18, several lifting cylinders 19 connecting the connecting ring to the drill chuck, and several suspension rods 20 suspending the annular blade below the connecting ring. The drill bit passes through the connecting ring, and the lifting cylinders and suspension rods are distributed circumferentially along the connecting ring. The drill bit has a spiral groove 21 on its circumference. The annular blade has an annular suspension groove with its opening facing upward and coaxial with the drill bit. The lower end of the lifting rod has a lifting block 22, which is located in the annular groove and suspends the annular blade. The annular blade is fixed together with one end of the drive rod 23, and the other end of the drive rod passes through the spiral groove.

Claims

1. A chip cutting structure for a drilling machine, comprising a worktable and a drill bit mounting base disposed on the worktable, wherein the drill bit mounting base is provided with a drill bit clamp, the drill bit used for drilling is a twist drill, and the drill bit has a helical groove on its circumferential surface, characterized in that, It also includes a ring anvil and a downward-facing ring blade. The anvil is connected to the lower end of several suspension rods. The upper end of the suspension rods passes through the drill chuck and is provided with a suspension block to prevent the suspension rods from falling off the drill chuck. The ring blade is located directly above the ring anvil and is connected to the drill chuck through a lifting structure. When drilling, the drill bit passes through the ring anvil and the ring blade. The ring anvil rests on the worktable.

2. The chip cutting structure for a drilling machine according to claim 1, characterized in that, When the annular anvil is suspended from the drill bit chuck by a suspension block, the annular anvil extends downwards beyond the drill bit. This prevents the generation of iron filings from interfering with the placement of the annular anvil on the workpiece.

3. The chip cutting structure for a drilling machine according to claim 1 or 2, characterized in that, The lifting structure includes a connecting ring, several lifting cylinders connecting the connecting ring to the drill bit chuck, and several lifting rods suspending the annular cutting edge below the connecting ring. The drill bit passes through the connecting ring, and the lifting cylinders and lifting rods are distributed circumferentially along the connecting ring. This provides convenience when connecting the cylinders.

4. The chip cutting structure for a drilling machine according to claim 3, characterized in that, The drill bit has a spiral groove on its circumference, and the annular cutting blade has an annular suspension groove with an upward-facing opening and coaxial with the drill bit. A lifting block is located at the lower end of the lifting rod, and the lifting block is situated within the annular groove to suspend the annular cutting blade. The annular cutting blade is fixed to one end of a drive rod, and the other end of the drive rod passes through the spiral groove. When the annular cutting blade cuts into metal chips, the rotation of the drill bit drives the annular cutting blade to rotate, thereby cutting the metal chips and improving the reliability of the annular cutting blade in cutting metal chips.

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