Drilling and milling integrated diamond milling cutter

Abstract

The utility model relates to the field of woodworking tools. The utility model aims to provide a drilling and milling integrated diamond milling cutter which comprises a stepped cylindrical cutter body consisting of a cutter handle and a cutter head, two sets of side blades and chip removal side grooves are distributed in the side wall of the tool bit in a central symmetry mode, two sets of outer side end blades and outer side chip removal end grooves are distributed in the outer edge of the end face of the tool bit in a central symmetry mode, two center chip removal end grooves are distributed in the middle of the end face of the tool bit in a central symmetry mode, and the center chip removal end grooves are communicated with the chip removal side grooves. A center end edge is further arranged in the middle of the end face of the tool bit, and the two ends of the center end edge extend into the two center chip removal end grooves correspondingly. The bottom faces of the outer side chip removal end grooves and the bottom faces of the center chip removal end grooves are inclined faces inclining downwards from inside to outside. The drilling and milling dual-purpose function is achieved, wood chips can be effectively discharged, and edge cracking caused by extrusion of the wood chips in the high-speed rotating process is prevented. And the end edge can be independently ground and replaced, so that the overall use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of woodworking tools, in particular to a diamond milling cutter. Background Art

[0002] A diamond milling cutter is a tool used for milling the edges of woodworking boards during board processing, which can make the board reach a predetermined shape and flatness. At present, the traditional diamond pre-milling cutter only has an independent milling function. During the board processing, when milling, it often needs to cooperate with drilling, which leads to the need to replace the processing tool, or adjust the processing sequence and replace different processing machines for processing. This undoubtedly reduces the processing efficiency and makes the processing steps more cumbersome, not meeting the modern woodworking requirements of lean and efficient processing.

[0003] Although there are currently some diamond milling cutters on the market that can realize both drilling and milling functions by synchronously opening cutting edges on the circumferential side and end of the cutter body; as Figure 1 shown, its end cutting edge (tip cutting edge) usually adopts two staggered diamond cutting edges, or even a continuous diamond cutting edge. During the process of drilling and milling the bottom, there is a large difference in processing wear between the part of the end cutting edge in the center and the part on the outside, resulting in uneven wear progress of the whole cutter. And due to its two-piece design, it is necessary to replace the whole piece when replacing the end cutting edge, which affects the subsequent maintenance of the tool. At the same time, the existing drilling and milling combined milling cutter also has the problem of poor chip removal of the end cutting edge, which is easy to cause the edge of the board to burst. Summary of the Invention

[0004] The purpose of the utility model is to provide a drilling and milling integrated diamond milling cutter with smooth chip removal.

[0005] To achieve the above invention purpose, the technical solution adopted by the utility model is: a drilling and milling integrated diamond milling cutter, including a stepped cylindrical cutter body composed of a tool shank and a cutter head;

[0006] On the side wall of the cutter head, two groups of side cutting edges and chip removal side grooves are symmetrically distributed around the center. On the outer edge of the end face of the cutter head, two groups of outer end cutting edges and outer chip removal end grooves are symmetrically distributed around the center. In the middle of the end face of the cutter head, two center chip removal end grooves are symmetrically distributed around the center. The center chip removal end grooves are communicated with the chip removal side grooves; in the middle of the end face of the cutter head, a center end cutting edge is also provided, and both ends of the center end cutting edge extend into the two center chip removal end grooves respectively; the bottom surfaces of the outer chip removal end grooves and the center chip removal end grooves are inclined planes that slope downward obliquely from the inside to the outside.

[0007] Preferably, the center end cutting edge is perpendicular to the outer end cutting edge.

[0008] Preferably, the side cutting edges, the center end cutting edge, and the outer end cutting edges are all diamond cutting edges.

[0009] Preferably, chip-breaking bumps are provided on the bottom surfaces of the outer chip removal end groove and the central chip removal end groove.

[0010] Preferably, the chip-breaking bumps are integrally formed with the tool head.

[0011] Preferably, the chip-breaking bumps are welded to the tool head.

[0012] The beneficial effects of the present utility model are mainly reflected in:

[0013] 1. The side edge can mill the edge of the plate or the inner wall of the hole, and the central end edge and the outer end edge have the functions of drilling and milling the bottom, meeting the dual functions of drilling and milling.

[0014] 2. The bottom surfaces of the outer chip removal end groove and the central chip removal end groove adopt an inclined surface design, which can effectively discharge the wood chips and prevent the edge explosion caused by the extrusion of wood chips during high-speed rotation.

[0015] 3. The central end edge and the outer end edge are designed separately, abandoning the traditional integral end edge design. The central end edge is mainly responsible for central drilling and milling, and the outer end edge is responsible for outer drilling and milling. They can be separately ground and replaced, reducing the overall use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a top view structural schematic diagram of the integral end edge in the prior art;

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

[0018] Figure 3 is Figure 2 a top view of

[0019] Figure 4 is Figure 3 a view taken along the line A-A of the structure shown in

[0020] Figure 5 is Figure 3 a view taken along the line B-B of the structure shown in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] As Figure 2 - 5 shown, a drill-mill integrated diamond milling cutter, similar to the traditional milling cutter, also includes a stepped cylindrical tool body composed of a tool shank 1 and a tool head 2. The tool shank 1 is used to connect with the fixture on the machine head, and the tool head 2 is the main working part for installing the cutting edges. The cutting edges can be conventional alloy edges or diamond cutting edges.

[0022] Compared with the existing milling cutters, it is different in the following aspects: 1. The segmented design and distribution form of the end edge; 2. The inclined surface design of the chip removal groove and the design of the chip breaking bumps, which enable better chip removal performance and chip breaking performance.

[0023] As Figure 1 and 2 shown in, on the side wall of the tool bit 2 of the present utility model, two groups of side edges 3 and chip removal side grooves 4 are symmetrically distributed about the center. The width of the side edge 3 is designed according to the hole diameter, and the length is designed according to the hole depth.

[0024] On the outer edge of the end face of the tool bit 2, two groups of outer end edges 5 and outer chip removal end grooves 6 are symmetrically distributed about the center. The outer end edge 5 extends from the outer edge of the end face of the tool bit to a length close to about 2 / 3 of the center, mainly responsible for the drilling and milling of the hole side. The wood chips discharged from the outer chip removal end groove 6 are directly discharged from the side of the tool bit 2. In the middle of the end face of the tool bit 2, two center chip removal end grooves 7 are symmetrically distributed about the center. The center chip removal end groove 7 is communicated with the chip removal side groove 4, and the wood chips are discharged from the chip removal side groove 4.

[0025] The present utility model adopts a split design of the outer end edge 5 and the center end edge 8. In the middle of the end face of the tool bit 2, a center end edge 8 is further provided. Both ends of the center end edge 8 extend into the two center chip removal end grooves 7 respectively. The side edge of the present utility model can mill the edge of the plate or the inner wall of the hole. The center end edge and the outer end edge have the functions of drilling and milling the bottom, meeting the dual functions of drilling and milling; and the center end edge and the outer end edge are designed separately, abandoning the traditional integral end edge design. The center end edge is mainly responsible for the center drilling and milling, and the outer end edge is responsible for the outer drilling and milling. They can be separately ground and replaced, reducing the overall use cost. Generally, the center end edge 8 and the outer end edge 5 are perpendicular to each other.

[0026] In addition, as combined with Figure 3 - 5 shown in, the bottom surfaces of the outer chip removal end groove 6 and the center chip removal end groove 7 of the present utility model are both inclined surfaces that slope obliquely downward from the inside to the outside. The bottom surfaces of the outer chip removal end groove 6 and the center chip removal end groove 7 adopt an inclined surface design, which can effectively discharge the wood chips and prevent the edge explosion caused by the extrusion of the wood chips during the high-speed rotation process.

[0027] In addition, in order to further improve the chip breaking property, that is, to make the wood chips smaller and easier to discharge, chip breaking bumps 9 are provided on the bottom surfaces of the outer chip removal end groove 6 and the center chip removal end groove 7. The chip breaking bumps 9 and the tool bit 2 can be integrally formed, directly formed by turning on a lathe when forming the bottom of the groove during the processing stage of the tool bit 2; since the bottom of the groove itself is an inclined surface, in order to reduce the processing difficulty of forming the chip breaking bumps 9 on the bottom of the groove, it can also be that the chip breaking bumps 9 are welded on the tool bit 2.

Claims

1. A drilling and milling integrated diamond milling cutter, comprising a stepped cylindrical cutter body composed of a cutter handle (1) and a cutter head (2); It is characterized in that: On the side wall of the cutter head (2), two groups of side edges (3) and chip removal side grooves (4) are symmetrically distributed around the center. On the outer edge of the end face of the cutter head (2), two groups of outer end edges (5) and outer chip removal end grooves (6) are symmetrically distributed around the center. In the middle of the end face of the cutter head (2), two center chip removal end grooves (7) are symmetrically distributed around the center. The center chip removal end grooves (7) are communicated with the chip removal side grooves (4). In the middle of the end face of the cutter head (2), a center end edge (8) is further provided. Both ends of the center end edge (8) extend into the two center chip removal end grooves (7) respectively. The bottom surfaces of the outer chip removal end grooves (6) and the center chip removal end grooves (7) are inclined planes that slope obliquely downward from the inside to the outside.

2. The integrated drilling and milling diamond milling cutter according to claim 1, wherein: The center end edge (8) is perpendicular to the outer end edge (5).

3. The integrated drilling and milling diamond milling cutter according to claim 2, wherein: The side edges (3), the center end edge (8), and the outer end edges (5) are all diamond cutting edges.

4. The integrated drilling and milling diamond milling cutter according to claim 3, wherein: Chip breaking bumps (9) are provided on the bottom surfaces of the outer chip removal end grooves (6) and the center chip removal end grooves (7).

5. The diamond milling cutter integrated with drilling according to claim 4, wherein: The chip breaking bumps (9) are integrally formed with the cutter head (2).

6. The integrated drilling and milling diamond milling cutter according to claim 5, wherein: The chip breaking bumps (9) are welded to the cutter head (2).

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