Novel single crystal diamond up-and-down chamfering tool

Abstract

The utility model relates to the field of hardware milling, and discloses a novel single crystal diamond up-down chamfering cutter which comprises a first cutter handle, a second cutter handle, a cutter head, a chamfering cutter and a side face milling cutter, an upper groove is formed in the second cutter handle in the radial direction, a lower groove is formed in the cutter head in the radial direction, one end of the chamfering cutter is fixed in the lower groove, and the other end of the chamfering cutter is fixed in the side face milling cutter. One end of the side milling cutter is fixed in the upper groove, the chamfering cutter is a prismatic blade, an upper cutting edge and a lower cutting edge are arranged on the edge, away from the cutter head, of the chamfering cutter, the included angle between the upper cutting edge and the lower cutting edge is 80 degrees, and the center line of the chamfering cutter and the center line of the cutter head and the end, away from the first cutter handle, of the side milling cutter are sequentially arranged at intervals along a straight line. The end, close to the second cutter handle, of the upper cutting edge extends to the inner side of the movement track of the side cutting edge. Chamfers at the upper end and the lower end of the side face are milled through the upper cutting edge and the lower cutting edge of the chamfering cutter, cutter replacement is not needed, and the cutting machining efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of metal milling, and in particular to a novel single-crystal diamond chamfering tool. Background Technology

[0002] AL6063 aluminum profile is an industrial aluminum profile used in relatively precision applications. Therefore, the processing of this type of aluminum profile, especially in terms of cross-sectional shape and cutting effect, has relatively strict requirements. The processing requires first milling the sides of the aluminum profile, and then using a chamfering tool to mill the chamfers at the top and bottom ends of the sides. To avoid interference between the chamfering milling tool and the side milling tool during the milling of the sides and chamfers of the aluminum profile, frequent tool changes are necessary, severely impacting processing efficiency and making it difficult to guarantee product quality. Utility Model Content

[0003] The purpose of this invention is to provide a novel single-crystal diamond chamfering tool to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a novel single-crystal diamond top and bottom chamfering tool, comprising: a first tool holder, a second tool holder, a cutting head, a chamfering cutter and a side milling cutter, wherein the two ends of the second tool holder are respectively connected to the first tool holder and the cutting head;

[0005] The second tool holder and the tool head are coaxially arranged. The second tool holder has an upper groove in the radial direction, and the tool head has a lower groove in the radial direction. One end of the chamfering cutter is fixed inside the lower groove, and one end of the side milling cutter is fixed inside the upper groove. The side milling cutter has a side cutting edge on its edge away from the second tool holder.

[0006] The chamfering cutter is a prismatic blade. The chamfering cutter has an upper cutting edge and a lower cutting edge on the edge away from the cutter head. The upper cutting edge and the lower cutting edge are arranged sequentially along the second cutter shank towards the cutter head. The intersection point of the upper cutting edge and the lower cutting edge is provided with a cutter tip. The included angle between the upper cutting edge and the lower cutting edge is 80°.

[0007] The center lines of the chamfering cutter and the cutter head are arranged sequentially at intervals along a straight line with the end of the side milling cutter away from the first tool holder, and the end of the upper cutting edge near the second tool holder extends to the inside of the movement trajectory of the side cutting edge.

[0008] Preferably, the chamfering tool is a prismatic single-crystal diamond tool, the short diagonal of the chamfering tool is parallel to the center line of the tool head, the long diagonal of the chamfering tool intersects the center line of the tool head perpendicularly, and the height of the tool head is less than the length of the short diagonal of the chamfering tool.

[0009] Preferably, the cutting head includes an upper frustum, a cylinder, and a lower frustum, which are coaxially connected in sequence along the direction away from the second tool holder. The upper and lower frustums are symmetrically arranged, and the upper and lower cutting edges are symmetrically arranged about the symmetrical surfaces of the upper and lower frustums. The inclination angle of the curved surface of the upper frustum is equal to the inclination angle of the upper cutting edge.

[0010] Preferably, the length of the long diagonal of the chamfering blade is 4.4mm to 4.6mm, and the length of the short diagonal of the chamfering blade is 3.68mm to 3.88mm.

[0011] Preferably, the diameter of the first handle is equal to the diameter of the cylinder, the diameter of the first handle is 5.97mm to 6.03mm, and the diameter of the second handle is 3.9mm to 4.1mm.

[0012] Preferably, the chamfering cutter has an upper rake face and a lower rake face symmetrically arranged on one side, and a rear face arranged on the other side. The upper rake face and the lower rake face are sequentially connected to the rear face along the direction from the second shank to the cutter head. The line of intersection between the upper rake face and the rear face forms the upper cutting edge, and the line of intersection between the lower rake face and the rear face forms the lower cutting edge.

[0013] Preferably, the chamfering cutter is fixed to the lower groove by welding or by a pin, and the side milling cutter is fixed to the upper groove by welding or by a pin.

[0014] Preferably, there are two chamfering blades. The end of the first blade handle near the second blade handle and the blade head are both radially provided with a lower groove, and the two chamfering blades are respectively disposed inside the two lower grooves.

[0015] Preferably, the side end mill is a tungsten carbide insert, the extension direction of the side end mill is parallel to the center line of the second tool holder, the length of the side end mill is equal to the length of the second tool holder, and the chamfering cutter and the side end mill are respectively disposed on both sides of the center line of the cutter head.

[0016] Preferably, the second tool holder is provided with a chip removal groove, the extension direction of the chip removal groove is parallel to the center line of the second tool holder, and the cross-section of the chip removal groove gradually decreases towards the tool tip.

[0017] Preferably, the side end mill is a helical insert arranged around the centerline of the second shank.

[0018] The beneficial effects of this utility model are as follows: By setting a side milling cutter and a chamfering cutter on both sides of the tool, the side milling cutter and the chamfering cutter will alternately process the aluminum exterior parts when the tool rotates. The side milling cutter is used to mill the side of the aluminum exterior parts, and the upper and lower cutting edges of the chamfering cutter are used to mill the chamfers at the upper and lower ends of the side. The side and chamfer can be milled simultaneously without changing tools, thus improving the cutting efficiency. Attached Figure Description

[0019] The accompanying drawings further illustrate the present invention, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0020] Figure 1 A perspective view of a single-crystal diamond chamfering tool provided in an embodiment of this utility model;

[0021] Figure 2 for Figure 1 A magnified view of a portion of region A in the middle;

[0022] Figure 3 This is a schematic diagram of the structure of a single-crystal diamond chamfering tool provided in an embodiment of the present invention;

[0023] Figure 4 A half-sectional view of a single-crystal diamond chamfering tool provided in an embodiment of this utility model;

[0024] In the diagram, the markings are: 1: First tool holder; 2: Second tool holder; 3: Tool head; 4: Chamfering cutter; 5: Side end mill; 6: Upper cutting edge; 7: Lower cutting edge; 8: Upper rake face; 9: Lower rake face. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0026] It should be noted that, in this utility model, unless otherwise stated, when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or may have an intervening element present simultaneously. "Inner" and "outer" refer to the inner and outer contours of a specific part. "Far" and "near" refer to the distance from or near to a certain component.

[0027] like Figures 1-4 As shown in the figure, an embodiment of the present invention provides a novel single-crystal diamond top and bottom chamfering tool 4, comprising: a first tool holder 1, a second tool holder 2, a tool head 3, a chamfering tool 4, and a side milling cutter 5, wherein the two ends of the second tool holder 2 are respectively connected to the first tool holder 1 and the tool head 3;

[0028] The second tool holder 2 and the tool head 3 are coaxially arranged. The second tool holder 2 has an upper groove in the radial direction, and the tool head 3 has a lower groove in the radial direction. One end of the chamfering cutter 4 is fixed inside the lower groove, and one end of the side milling cutter 5 is fixed inside the upper groove. The side milling cutter 5 has a side cutting edge on its edge away from the second tool holder 2.

[0029] The chamfering cutter 4 is a prismatic blade. The chamfering cutter 4 has an upper cutting edge 6 and a lower cutting edge 7 on its edge away from the cutter head 3. The upper cutting edge 6 and the lower cutting edge 7 are arranged sequentially along the second tool holder 2 toward the cutter head 3. The intersection point of the upper cutting edge 6 and the lower cutting edge 7 is provided with a tool tip. The included angle between the upper cutting edge 6 and the lower cutting edge 7 is 80°.

[0030] The center lines of the chamfering cutter 4 and the cutter head 3 are arranged sequentially along a straight line with the end of the side milling cutter 5 away from the first tool holder 1. The end of the upper cutting edge 6 near the second tool holder 2 extends to the inside of the movement trajectory of the side cutting edge.

[0031] By setting a side milling cutter 5 and a chamfering cutter 4 on both sides of the cutting tool, the side milling cutter 5 and the chamfering cutter 4 will alternately mill the aluminum exterior parts as the tool rotates. The side milling cutter 5 mills the side of the aluminum exterior parts, the upper cutting edge 6 of the chamfering cutter 4 mills the chamfer at the lower end of the side, and finally the tool moves and the lower cutting edge 7 of the chamfering cutter 4 mills the chamfer at the upper end of the side, completing the milling process. The side and chamfer can be milled simultaneously without changing tools, improving cutting efficiency.

[0032] The chamfering cutter 4 is a prismatic single-crystal diamond cutter. The short diagonal of the chamfering cutter 4 is parallel to the center line of the cutter head 3, and the long diagonal of the chamfering cutter 4 intersects the center line of the cutter head 3 perpendicularly. The height of the cutter head 3 is less than the length of the short diagonal of the chamfering cutter 4. When the chamfering cutter 4 is fixed to the cutter head 3, both ends of the cutter head 3 are located between the upper and lower ends of the chamfering cutter 4. By using the larger and longer chamfering cutter 4, chamfers of various specifications can be processed. The upper cutting edge 6 enters the trajectory of the side milling cutter 5. The side milling cutter 5 and the chamfering cutter 4 can alternately mill the workpiece, and the upper cutting edge 6 is longer than the chamfer on the workpiece, which can accommodate chamfers of various specifications.

[0033] The cutting head 3 includes an upper frustum, a cylinder, and a lower frustum. The upper frustum, cylinder, and lower frustum are coaxially connected sequentially along the direction away from the second tool holder 2. The upper and lower frustums are symmetrically arranged. The upper cutting edge 6 and lower cutting edge 7 are symmetrically arranged about the symmetrical surfaces of the upper and lower frustums. The inclination angle of the curved surface of the upper frustum is equal to the inclination angle of the upper cutting edge 6. The diameter of the lower base of the upper frustum and the diameter of the cylinder are equal to the diameter of the lower base of the lower frustum. The cutting head 3 is smaller at both ends and larger in the middle, facilitating the welding and fixing of the prismatic chamfering tool 4.

[0034] The length of the long diagonal of the chamfering blade 4 is 4.4mm to 4.6mm, and the length of the short diagonal of the chamfering blade 4 is 3.68mm to 3.88mm.

[0035] The diameter of the first handle 1 is equal to the diameter of the cylinder, and the diameter of the first handle 1 is 5.97mm to 6.03mm. The diameter of the second handle 2 is 3.9mm to 4.1mm. The long diagonal of the chamfering cutter 4 is smaller than the diameter of the cutter head 3, which facilitates slotting on the cutter head 3 to fix the chamfering cutter 4.

[0036] The chamfering cutter 4 has an upper rake face 8 and a lower rake face 9 symmetrically arranged on one side, and a flank face on the other side. The upper rake face 8 and the lower rake face 9 are sequentially connected to the flank face along the direction from the second tool holder 2 to the tool head 3. The intersection line between the upper rake face 8 and the flank face forms the upper cutting edge 6, and the intersection line between the lower rake face 9 and the flank face forms the lower cutting edge 7. The upper cutting edge 6 is used to mill the chamfer at the lower end of the aluminum exterior part, and the lower cutting edge 7 is used to mill the chamfer at the lower end of the aluminum exterior part. Since the flank faces of the upper cutting edge 6 and the lower upper cutting edge 6 are coplanar, the upper cutting edge 6 and the lower upper cutting edge 6 rotate in the same direction during machining, eliminating the need to adjust the tool rotation speed.

[0037] The chamfering cutter 4 is fixed to the lower groove by welding or by a pin, and the side milling cutter 5 is fixed to the upper groove by welding or by a pin. Welding the chamfering cutter 4 and the side milling cutter 5 helps to prevent slight wobble during machining. Using pins to fix the chamfering cutter 4 and the side milling cutter 5 facilitates their replacement.

[0038] The side milling cutter 5 is made of tungsten carbide insert. The extension direction of the side milling cutter 5 is parallel to the centerline of the second tool holder 2. The length of the side milling cutter 5 is equal to the length of the second tool holder 2. The chamfering cutter 4 and the side milling cutter 5 are respectively positioned on either side of the centerline of the cutter head 3. The side milling cutter 5 extends in a straight line and is used to mill the side surface of the aluminum exterior part. The length of the second tool holder 2 is 19.9 mm to 20.1 mm.

[0039] The second tool holder 2 is provided with a chip removal groove, the extension direction of which is parallel to the center line of the second tool holder 2, and the cross-section of which gradually decreases towards the tool tip 3. Chips generated during milling by the side end mill 5 are discharged through the chip removal groove.

[0040] In one embodiment, two chamfering cutters 4 are used. Both the end of the first tool holder 1 near the second tool holder 2 and the cutter head 3 have radially recessed grooves. The two chamfering cutters 4 are respectively disposed within the two recessed grooves. By using the chamfering cutters 4 on the first tool holder 1 and the chamfering cutters 4 on the cutter head 3, the chamfers at the top and bottom ends of the side surface can be milled simultaneously without moving the cutting tools, further improving processing efficiency.

[0041] In one embodiment, the number of side end mills 5 is one, and the side end mill 5 is a helical tungsten carbide insert arranged around the center line of the second tool holder 2. The side end mill 5 is integrally formed with the second tool holder 2. This can accelerate the chip removal speed.

[0042] In one embodiment, the first tool holder 1 has a central hole, and one end of the second tool holder 2 is detachably disposed inside the central hole via a pin. This facilitates the replacement of the second tool holder 2 and the tool head 3, and allows for quick replacement of the side milling cutter 5 and the chamfering cutter 4.

[0043] The technical features of the embodiments described above can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these should all be considered to be within the scope of this specification.

Claims

1. A novel single-crystal diamond chamfering tool, characterized in that: include: The device comprises a first tool holder, a second tool holder, a cutting head, a chamfering cutter, and a side milling cutter, wherein the two ends of the second tool holder are respectively connected to the first tool holder and the cutting head; The second tool holder and the tool head are coaxially arranged. The second tool holder has an upper groove in the radial direction, and the tool head has a lower groove in the radial direction. One end of the chamfering cutter is fixed inside the lower groove, and one end of the side milling cutter is fixed inside the upper groove. The side milling cutter has a side cutting edge on its edge away from the second tool holder. The chamfering cutter is a prismatic blade. The chamfering cutter has an upper cutting edge and a lower cutting edge on the edge away from the cutter head. The upper cutting edge and the lower cutting edge are arranged sequentially along the second cutter shank towards the cutter head. The intersection point of the upper cutting edge and the lower cutting edge is provided with a cutter tip. The included angle between the upper cutting edge and the lower cutting edge is 80°. The center lines of the chamfering cutter and the cutter head are arranged sequentially at intervals along a straight line with the end of the side milling cutter away from the first tool holder, and the end of the upper cutting edge near the second tool holder extends to the inside of the movement trajectory of the side cutting edge.

2. The novel single-crystal diamond chamfering tool according to claim 1, characterized in that: The chamfering tool is a prismatic single-crystal diamond tool. The short diagonal of the chamfering tool is parallel to the center line of the tool head, and the long diagonal of the chamfering tool intersects the center line of the tool head perpendicularly. The height of the tool head is less than the length of the short diagonal of the chamfering tool.

3. The novel single-crystal diamond chamfering tool according to claim 1, characterized in that: The cutting head includes an upper frustum, a cylinder, and a lower frustum. The upper frustum, cylinder, and lower frustum are coaxially connected in sequence along the direction away from the second tool holder. The upper and lower frustums are symmetrically arranged. The upper and lower cutting edges are symmetrically arranged about the symmetrical surfaces of the upper and lower frustums. The inclination angle of the curved surface of the upper frustum is equal to the inclination angle of the upper cutting edge.

4. The novel single-crystal diamond chamfering tool according to claim 2, characterized in that: The length of the long diagonal of the chamfering cutter is 4.4mm to 4.6mm, and the length of the short diagonal of the chamfering cutter is 3.68mm to 3.88mm.

5. The novel single-crystal diamond chamfering tool according to claim 3, characterized in that: The diameter of the first tool holder is equal to the diameter of the cylinder, and the diameter of the first tool holder is 5.97mm to 6.03mm. The diameter of the second tool holder is 3.9mm to 4.1mm.

6. The novel single-crystal diamond chamfering tool according to claim 1, characterized in that: The chamfering cutter has an upper rake face and a lower rake face symmetrically arranged on one side, and a rear face arranged on the other side. The upper rake face and the lower rake face are connected to the rear face in sequence along the direction from the second tool holder to the tool head. The line of intersection between the upper rake face and the rear face forms the upper cutting edge, and the line of intersection between the lower rake face and the rear face forms the lower cutting edge.

7. The novel single-crystal diamond chamfering tool according to claim 1, characterized in that: There are two chamfering blades. The first blade handle near the second blade handle and the blade head are both radially provided with a lower groove. The two chamfering blades are respectively disposed inside the two lower grooves.

8. The novel single-crystal diamond chamfering tool according to claim 1, characterized in that: The side end mill is a tungsten carbide insert. The extension direction of the side end mill is parallel to the center line of the second tool holder. The length of the side end mill is equal to the length of the second tool holder. The chamfering cutter and the side end mill are respectively located on both sides of the center line of the cutter head.

9. The novel single-crystal diamond chamfering tool according to claim 8, characterized in that: The second tool holder is provided with a chip removal groove, the extension direction of which is parallel to the center line of the second tool holder, and the cross-section of which gradually decreases towards the tool tip.

10. The novel single-crystal diamond chamfering tool according to claim 1, characterized in that: The side end mill is a helical insert arranged around the center line of the second tool holder.

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