Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a CNC machining method of a tool electrode and the tool electrode, which can enable the surface of the manufactured tool electrode to have a sharp corner surface.
According to a first aspect of the present invention there is provided a CNC machining method of a tool electrode for making the tool electrode, comprising the steps of:
s100, providing a metal piece of a plate-shaped body;
s200, roughly machining the metal piece by using CNC (computer numerical control) to manufacture an initial sample piece, wherein the surface of the initial sample piece is provided with a first side area and a second side area;
s300, using CNC to finely machine the initial sample piece, specifically comprising the following steps: s310, processing the first side area; s320 processing the second side region.
The CNC machining method of the tool electrode, provided by the embodiment of the invention, has the following beneficial effects: by adopting the CNC processing method, after the initial sample piece is manufactured, the surface of the initial sample piece is provided with a first side area and a second side area, and the cutter sequentially processes the first side area and the second side area; specifically, when the first side area is machined, the cutter machines the first side area from the upper end of the first side area to the top down, so that the first side area presents a sharp corner appearance; similarly, when the second side area is machined, the cutter machines the second side area from the upper end of the second side area from top to bottom, and thus the first side area presents a sharp corner appearance. It is thus clear that, compare and adopt cutter circumferential motion among the prior art to process first side region and second side region simultaneously, this application scheme adopts first side region of independent processing and second side region, so that the surface of tool electrode presents the outward appearance of sharp angle.
According to some embodiments of the present invention, in the S310 and the S320, the cutting pin angle of the cutter is 0 degree or 180 degrees.
According to some embodiments of the invention, the first side region has an area smaller than an area of the second side region, and an edge of the first side region is connected to an edge of the second side region.
According to some embodiments of the invention, the initial sample has a top surface and two side surfaces, the two side surfaces facing in opposite directions, wherein at least a portion of the first side region is ipsilateral to the one of the side surfaces and at least a portion of the second side region is ipsilateral to the other of the side surfaces; the S300 further includes the steps of: s330, processing the top surface of the initial sample piece; s340, processing the side surface of the initial sample piece; wherein the S340 is over-cut between 0.004mm and 0.006mm more than the S330.
According to some embodiments of the invention, in said S340, the tool path is to extend between twenty-five to fifty-five percent of the tool diameter; or the tool path is to extend between 0.25mm and 0.50 mm.
According to some embodiments of the invention, the S300 further comprises the steps of: s350, machining the first side region again, wherein the edge of the side is connected with the edge of the first side region.
According to some embodiments of the invention, in the S350, the machining allowance is less than between 0.005mm and 0.015 mm.
According to some embodiments of the invention, the top surface of the initial sample has an aperture; the CNC machining method further comprises the following steps: s400, finishing the small hole on the top surface of the initial sample piece, and cutting the small hole by 0.005mm to 0.015mm more than the machining allowance.
According to some embodiments of the invention, the CNC machining method further comprises the steps of: s500, chamfering the port of the small hole in the S400, and cutting the small hole by 0.005mm to 0.0.15mm more than the machining allowance.
According to a second aspect of the invention, a tool electrode is disclosed, which is manufactured by the CNC machining method.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The invention discloses a CNC machining method of a tool electrode, which is used for manufacturing the tool electrode, wherein the tool electrode is used for manufacturing an injection mold of a mobile phone shell. Referring to fig. 1 to 4, the CNC processing method includes the steps of: s100 providing a metal piece 10; s200, using the CNC rough machining metal piece 10 to manufacture an initial sample 100, where the surface of the initial sample 100 has a first side region 110 and a second side region 120 (refer to fig. 2 and 3); s300, using the CNC to finely machine the initial sample piece 100, specifically comprising the following steps: s310 processing the first side region 110; s320 processes the second side region 120.
By adopting the CNC processing method, after the initial sample 100 is manufactured, the shape of the initial sample 100 substantially conforms to the shape of the required tool electrode, the surface of the initial sample 100 has a first side region 110 and a second side region 120, and the tool sequentially processes the first side region 110 and the second side region 120; specifically, when the first side region 110 is machined, the cutter machines the first side region 110 from the upper end of the first side region 110 and from top to bottom, so that the first side region 110 presents a sharp corner appearance; similarly, when the second side region 120 is machined, the cutter machines the second side region 120 from the top of the second side region 120 and from top to bottom, so that the first side region 110 has a sharp corner appearance. It can be seen from above that, compare in adopting cutter circumferential motion among the prior art to process first side region 110 and second side region 120 simultaneously, this application scheme adopts and processes first side region 110 and second side region 120 alone, so that the border on the surface of tool electrode presents the outward appearance of sharp angle, has satisfied user's requirement.
It should be noted that the first side region 110 and the second side region 120 are located at the edge of the initial sample 100 or close to the edge of the initial sample 100.
In some embodiments, the cutter pin angle of the cutter is 0 degrees or 180 degrees in S310 and S320. Specifically, in the space system where the metal piece 10 is placed, after the tool roughly processes the metal piece 10, the initial sample piece 100 is vertically placed in the space system. The space system has an X-axis, a Y-axis and a Z-axis, wherein the X-axis is horizontally disposed and is perpendicular to the side 140 of the initial sample 100, i.e. consistent with the thickness direction of the initial sample 100; the Y axis is horizontally disposed and is disposed parallel to the side 140 of the initial sample 100, i.e., in the same direction as the width direction of the initial sample 100; the Z-axis is vertically disposed to coincide with the height of the original sample 100, i.e., to coincide with the length direction of the original sample 100. When the cutter is used for processing the first side area 110 and the second side area 120 of the initial sample 100, the cutter is D3R1.5, the cutting pin angle of the cutter is 0 degree or 180 degrees, that is, the cutting pin angle is the direction of the Y axis, the distance between the cutters is fine, and the distance between each cutter is uniformly distributed, so as to avoid the surface of the initial sample 100 from presenting coarse cutting lines.
In some embodiments, referring to fig. 1 and 5, S200 includes the following steps: s210, roughing the metal piece 10; s220, performing light irradiation on the metal piece 10; s230, the metal part 10 is polished to manufacture an initial sample 100. Specifically, firstly, a rough machining tool is used for carrying out first-step machining on metal, and a sample piece with a preliminary outline is manufactured on a metal piece 10; secondly, performing intermediate polishing on the sample piece processed in the previous step by using a R1.5 cutter, wherein the sample piece is provided with 0.07mm of finish polishing compared with a tool electrode; finally, the sample from the previous step was machined by cutting with a knife using D8, which now leaves a margin of between 0.025mm and 0.035mm compared to the tool electrode, which was designated as the initial sample 100.
By adopting the above scheme, the metal sample piece is processed by adopting roughing, middle light and finishing light in sequence, so that the initial sample piece 100 with the allowance between 0.025mm and 0.035mm is gradually prepared, the sample piece is processed finely in the following process, and the initial sample piece 100 has the size and the appearance of the tool electrode.
In some embodiments, referring to fig. 1 and 4, the area of the first side region 110 is smaller than the area of the second side region 120, the edge of the first side region 110 is connected with the edge of the second side region 120, and step S320 is after step S310. Specifically, the tool first machines a first side region 110 with a smaller area, and burrs generated in the first side region 110 move from the edge of the first side region 110 to a second side region 120; the cutter then machines a second side area 120 with a larger area, burrs generated in the second side area 120 move to the first side area 110 from the edge of the second side area 120, and the burrs generated in the machining of the first side area 110 return to the first side area 110 again; finally, the burrs of the first side region 110 are removed. By adopting the above scheme, burrs generated by machining the first side area 110 and the second side area 120 by the cutter are concentrated in the first side area 110, and the area of the first side area 110 relative to the second side area 120 is smaller, so that the burrs are conveniently removed.
In some embodiments, the surface of the initial sample 100 has a top surface 130 and a side surface 140, and S300 further includes the following steps: s330, processing the top surface 130 of the initial sample 100; s340, processing the side surface 140 of the initial sample 100, wherein the top surface 130 and the side surface 140 are processed by the same tool, so as to further obtain the proximity to the desired tool electrode.
Further, the over-cutting of S340 is 0.004mm to 0.006mm more than that of S330, and the height of the cutter and the height of the metal piece 10 are required to be adjusted when the cutter is used for processing a product, so that the cutter can accurately process the top of the product; however, due to equipment tolerances or tool wear, the machining of the side 140 requires between 0.004mm to 0.006mm more overcut than the machining of the top to ensure that the side 140 can be machined accurately.
In some embodiments, S300 further comprises the steps of: s350 repeatedly climbs the sharp corner face of the first side region 110, wherein the side face 140 and the first side region 110 are located on the same side of the initial sample 100, and the edge of the side face 140 and the edge of the first side region 110 are integrally arranged, that is, the first side region 110 is located between the side face 140 and the second side region 120, as seen from above, after the processing in S340 is completed, the burr generated by the processing of the side face 140 moves to the first side region 110 from the edge of the side face 140.
In summary, the burrs generated by the processing of the first side region 110, the second side region 120 and the side surface 140 are all located in the first side region 110, so that the tool climbs the sharp corner surface of the first side region 110 again, and the burrs of the first side region 110 are removed better. As can be seen, the above-described deburring steps are employed to facilitate deburring of the initial sample 100.
Further, in S350, the milling amount is less than the machining allowance by 0.005mm to 0.015mm, specifically, the cutter deburs the corresponding area of the land, which is equivalent to milling the same allowance area twice, and the area is easily over-cut, so that the milling amount is less than 0.005mm to 0.015mm when the cutter is used for cutting the pin, thereby avoiding the over-cutting of the area by the cutter.
In some embodiments, in S340, the tool path extends between twenty-five percent and fifty-five percent of the tool diameter, that is, the tool path extends between 0.25mm and 0.50mm, so that the feed point of the tool path is located outside the tool, and thus, when the tool machines the side surface 140 of the initial sample 100, no tool mark is generated each time the tool enters the side surface 140 of the initial sample 100, thereby ensuring the appearance of the initial sample 100 after machining; meanwhile, the cutter path is within the range, so that the phenomenon that the distance between the cutter feeding point of the cutter and the initial sample piece 100 is far is avoided, the cutter path of the cutter has a long reactive distance, the cutter does not process a product in the movement of the reactive distance, and the CNC machining efficiency is reduced.
In some embodiments, the top surface 130 of the initial sample 100 has an aperture 131; the CNC machining method further comprises the following steps: s400 finishing the small hole 131 of the top surface 130 of the initial sample 100, wherein the excess is between 0.005mm and 0.015mm more than the process margin. Specifically, in the process of finishing the small hole 131, due to the error of the equipment or the cutter, the cutter needs to be over-cut by 0.005mm to 0.015mm, so that the small hole 131 is prevented from being processed by an insufficient amount.
Further, the CNC machining method further comprises the following steps: s500 chamfers the port of the eyelet 131 in S400. Due to the error between the tool and the equipment, the tool in the step S500 cannot be precisely butted with the tool in the step S400, and therefore, the machining allowance is increased by between 0.005mm and 0.015mm in the step S500. Specifically, the R angle on the hole climbing edge of the cutter of R0.3 is raised by 0.005mm to 0.015mm, and the cutter cannot touch the polished surface generated by S400, so that the generation of the cutter connecting mark is avoided.
According to a second aspect of the invention, a tool electrode is disclosed, which is manufactured by the CNC machining method. Compared with the prior art in which the cutter moves circumferentially to machine the first side area 110 and the second side area 120 simultaneously, the scheme of the application adopts the method of machining the first side area 110 and the second side area 120 separately, so that the edge of the surface of the tool electrode presents a sharp-angled appearance, and the requirements of users are met.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.