Milling method

Abstract

The invention relates to the technical field of milling, and discloses a milling method, which comprises the following steps: milling a to-be-milled surface of a workpiece so as to form a base surface on the surface of a workpiece matrix, and reducing the separation area of milling chips corresponding to the base surface when the milling chips are separated from the workpiece matrix in the milling process. The edge breakage phenomenon of the workpiece in the milling operation process can be reduced by reducing the area of the separation surface, namely, when the milling chips are separated from the base surface of the workpiece base body, and meanwhile, the service life of the milling cutter can be prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of milling processing, and in particular to a milling method. Background Art

[0002] Milling is a mechanical processing method that uses a milling cutter as a tool to process the surface of an object. Milling machines include horizontal milling machines, vertical milling machines, gantry milling machines, copy milling machines, universal milling machines, and bar milling machines. During the milling process, the workpiece will have edge collapse, such as uneven cutting surface, curling, and burrs. Summary of the invention

[0003] The purpose of the present invention is to overcome the problem of edge collapse of workpieces during milling in the prior art, and to provide a milling method that can reduce the separation area corresponding to the base surface when the milling chips separate from the workpiece base, thereby reducing the edge collapse phenomenon.

[0004] In order to achieve the above-mentioned objectives, the present invention provides a milling method on one hand, comprising: milling the surface to be milled of a workpiece to form a base surface on the surface of a workpiece substrate, and during the milling process, reducing the separation area corresponding to the base surface when the milling chips separate from the workpiece substrate.

[0005] The above technical solution can reduce the edge collapse of the workpiece during the milling operation by reducing the area of ​​the separation surface, that is, the separation area of ​​the base surface of the workpiece base when the milling chips separate from the base body, and at the same time can increase the service life of the milling cutter.

[0006] Preferably, milling is performed between the milling start end and the milling end end of the surface to be milled, and when the milling process reaches the milling edge close to the milling end end, the feed speed during the milling operation is reduced.

[0007] Preferably, the reduced feeding speed is 50%-80% of the original feeding speed.

[0008] Preferably, the distance between the milling edge and the milling end is 2-3 mm.

[0009] Preferably, a separation surface of the milling chips corresponding to the base surface is formed as an arcuate surface, wherein the arcuate surface protrudes toward the base surface.

[0010] Preferably, the surface to be milled is milled using a circular milling cutter, wherein a central axis of the circular milling cutter is parallel to the surface to be milled.

[0011] Preferably, during the milling process, the surface to be milled is subjected to rotational milling, wherein: a milling cutter capable of milling the surface to be milled is additionally provided in the rotation circumferential direction.

[0012] Preferably, the number of the additional milling cutters is greater than or equal to 1 and less than or equal to 1 times the number of the original milling cutters.

[0013] Preferably, before the milling process reaches the milling end of the surface to be milled, the corners of the milling end are formed into an inclined surface.

[0014] Preferably, the inclination angle of the inclined surface is 35°-55°; and / or

[0015] The difference between the height of the inclined surface and the milling thickness is no more than 0.38 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the state of milling a workpiece using a milling device;

[0017] Figure 2 It is a schematic diagram of the state of milling a workpiece using a circular milling cutter;

[0018] Figure 3 It is a schematic diagram of the state of milling a workpiece using a rectangular milling cutter;

[0019] Figure 4 It is a schematic diagram of the structure of the milling device viewed from above before the milling cutter is added;

[0020] Figure 5 It is a schematic diagram of the structure of the milling device viewed from above after a milling cutter is added.

[0021] Description of Reference Numerals

[0022] 10-milling device; 120-circular milling cutter; 122-rectangular milling cutter; 14-cutter head; 16-milling cutter; 20-workpiece; 200-milling chips; 202-surface to be milled; 204-inclined surface. DETAILED DESCRIPTION

[0023] In the present invention, unless otherwise specified, directional words such as "up, down, left, right" are generally understood in combination with the directions shown in the drawings and actual applications, and "inside and outside" refer to the inside and outside of the outline of the component.

[0024] It should be noted that the milling device 10 can be used to mill the workpiece 20 to a preset thickness. Figure 1 As shown in , the milling device 10 may include a cutter disc 14 and a cutter group mounted on the cutter disc 14, and the cutter group may include a plurality of milling cutters 16 arranged along the circumference of the cutter disc 14. The milling cutters 16 may perform milling operations on a workpiece 20. In addition, the cutter disc 14 has a rotation axis, and the cutter disc 14 may drive the cutter group to rotate around the rotation axis, and the cutter disc 14 may drive the cutter group to move along the milling direction to perform milling operations.

[0025] The present invention provides a milling method, combining Figure 1 and Figure 2 As shown in , it includes: milling the surface 202 to be milled of the workpiece 20. It can be understood that the milling cutter 16 can mill the surface 202 to be milled during the process of moving and rotating, so as to mill off the material of the preset thickness of the surface 202 to be milled of the workpiece 20. After milling, the surface formed on the workpiece base can be the base surface 206. During the milling process, the separation area corresponding to the base surface 206 when the milling chips 200 separate from the workpiece base is reduced. It should be noted that when the milling cutter 16 touches and mills the surface 202 to be milled of the workpiece 20, milling chips 200 of a certain shape will separate from the workpiece base, for example, Figure 3 As shown in FIG. 1 , when the surface 202 to be milled of the workpiece 20 is milled using the rectangular milling cutter 122, substantially rectangular milling chips 200 are separated from the workpiece substrate; and when the surface 202 to be milled of the workpiece 20 is milled using the circular milling cutter 120, as shown in FIG. Figure 2 As shown in the figure, the milling chips 200 having a substantially crescent shape will be separated from the workpiece base. Before the milling chips 200 are separated from the workpiece base, there will be a surface corresponding to the base surface 206, that is, a separation surface, and after the milling chips 200 are separated from the workpiece base, the separation surface is separated from the base surface 206. When the area of ​​the separation surface, that is, the separation area of ​​the milling chips 200, is reduced, the edge collapse phenomenon of the workpiece 20 during the milling operation can be reduced, and the service life of the milling cutter can be increased.

[0026] It should be noted that the milling operation can be performed between the milling start end and the milling end end of the milling surface 202, that is, Figure 1 In the orientation shown in the figure, the milling operation can proceed from the leftmost edge of the surface 202 to be milled to its rightmost edge. When the milling process reaches the milling edge close to the end of the milling, that is, when the milling cutter 16 reaches the part close to the rightmost edge of the surface 202 to be milled, the feed speed during the milling operation can be reduced, thereby reducing the detachment area of ​​the milling chips 200, thereby reducing the edge collapse phenomenon of the workpiece 20 to be milled.

[0027] In order to balance milling efficiency and reduce edge collapse, the reduced feed rate can be 50%-80% of the original feed rate, that is, the travel speed of the milling cutter 16 along the milling direction can be reduced to 50%-80% of the original feed rate. The original feed rate can be understood as the feed rate before the reduction.

[0028] It is understandable that the distance between the milling edge and the milling end can be a first distance, wherein the first distance can be 2-3 mm. Setting the first distance to 2-3 mm not only effectively reduces the edge collapse phenomenon, but also substantially does not affect the milling efficiency.

[0029] In addition, the separation surface of the milling chips 200 corresponding to the base surface 206 can be formed into an arc surface, wherein the arc surface can protrude toward the base surface 206, so that the separation area can be reduced, thereby effectively reducing the edge collapse phenomenon. Figure 2 As shown in , the cross-sectional width of the milling chips 200 gradually increases in the direction from the base surface 206 to the surface to be milled 202. It can be seen that the separation area of ​​the milling chips 200 when they are separated from the base surface 206 is the smallest, which greatly reduces the edge collapse phenomenon. In addition, compared with the roughly rectangular milling chips 200 formed when the surface to be milled 202 of the workpiece 20 is milled by the rectangular milling cutter 122, the milling chips 200 with curved surfaces have a smaller separation area, which can effectively reduce the edge collapse phenomenon.

[0030] The circular milling cutter 120 can be used to mill the surface 202 to be milled, wherein the central axis of the circular milling cutter 120 is parallel to the surface 202 to be milled. When the cutter head 14 drives the circular milling cutter 120 to rotate and move, the blades distributed on the circumference of the circular milling cutter 120 can mill the surface 202 to be milled, thereby obtaining milling chips 200, wherein the separation surface of the milling chips 200 corresponding to the base surface 206 can be formed as an arc surface, and the arc surface can basically protrude toward the base surface 206.

[0031] In addition, during the milling process, the milling surface 202 can be subjected to rotational milling, wherein: in the rotation circumferential direction, a milling cutter 16 capable of milling the milling surface 202 is added. The milling cutter 16 can be a circular milling cutter 120. The number of milling cutters 16 increases, and the milling amount can be reduced, so that the separation area of ​​the milling chips 200 can be reduced, the edge collapse phenomenon can be reduced, and the edge collapse phenomenon can be improved.

[0032] The number of the additional milling cutters 16 is greater than or equal to 1 and less than or equal to 1 times the number of the original milling cutters 16. This not only ensures the milling efficiency, but also effectively reduces the edge collapse phenomenon and controls the cost. The number of the original milling cutters 16 can be understood as the number of milling cutters 16 before the additional milling cutters 16 are installed.

[0033] Combination Figure 4 and Figure 5 As shown in , the milling device 10 may include a cutter disc 14 and a cutter group mounted on the cutter disc 14, and the cutter group may include a plurality of milling cutters 16 arranged along the circumference of the cutter disc 14. The milling cutter 16 may perform a milling operation on a workpiece 20. In addition, the cutter disc 14 has a rotation axis, and the cutter disc 14 may drive the cutter group to rotate around the rotation axis, and the cutter disc 14 may drive the cutter group to move along the milling direction to perform a milling operation. It is understandable that the number of milling cutters 16 may be increased on the cutter disc 14.

[0034] like Figure 1As shown in , before the milling process reaches the milling end of the surface to be milled 202, the corners of the milling end are formed into an inclined surface 204. By forming the corners of the milling end into the inclined surface 204, the edge collapse phenomenon can be further effectively reduced. The inclination angle of the inclined surface 204 can be 35°-55°. It can be understood that the angle formed by the inclined surface 204 and the base surface 206 can be 35°-55°; in addition, the difference between the height of the inclined surface 204 and the milling thickness is not greater than 0.38mm, that is, the difference formed by subtracting the milling thickness from the height r of the inclined surface 204 is not greater than 0.38mm. It should be noted that in Figure 1 As shown in , the height r of the inclined surface 204 is equal to the milling thickness, that is, the difference between the two is 0. The milling thickness can be understood as the thickness of the material to be milled, that is, the difference between the milling surface 202 before milling and the base surface 206 after milling. It can be understood that the height of the inclined surface can be greater than the milling thickness.

[0035] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A milling method, characterized in that: include: The surface to be milled (202) of the workpiece (20) is milled to form a base surface (206) on the surface of the workpiece base. During the milling process, the separation area corresponding to the base surface (206) when the milling chips (200) separate from the workpiece base is reduced.

2. The milling method according to claim 1, characterized in that: Milling is performed between the milling start end and the milling end end of the surface to be milled (202), and when the milling process reaches the milling edge close to the milling end end, the feed speed during the milling operation is reduced.

3. The milling method according to claim 2, characterized in that: The reduced feed speed is 50%-80% of the original feed speed.

4. The milling method according to claim 2, characterized in that: The distance between the milling edge and the milling end is 2-3 mm.

5. The milling method according to claim 1, characterized in that: The separation surface of the milling chips (200) corresponding to the base surface (206) is formed into an arcuate surface, wherein the arcuate surface protrudes toward the base surface (206).

6. The milling method according to claim 5, characterized in that: The surface to be milled (202) is milled using a circular milling cutter (120), wherein a central axis of the circular milling cutter (120) is parallel to the surface to be milled (202).

7. The milling method according to claim 1, characterized in that: During the milling process, the surface to be milled (202) is subjected to rotational milling, wherein: a milling cutter (16) capable of milling the surface to be milled (202) is added in the rotation circumferential direction.

8. The milling method according to claim 7, characterized in that: The number of the additional milling cutters (16) is greater than or equal to 1 and less than or equal to 1 times the number of the original milling cutters (16).

9. The milling method according to any one of claims 1 to 8, characterized in that: Before the milling process reaches the milling end of the surface to be milled (202), the corners of the milling end are formed into an inclined surface (204).

10. The milling method according to claim 9, characterized in that: The inclined surface (204) has an inclination angle of 35°-55°; and / or The difference between the height of the inclined surface (204) and the milling thickness is no greater than 0.38 mm.

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