CN104462639A - Fine carving machining method for patterns on bottom surface of mould cavity - Google Patents
Fine carving machining method for patterns on bottom surface of mould cavity Download PDFInfo
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- CN104462639A CN104462639A CN201410547816.6A CN201410547816A CN104462639A CN 104462639 A CN104462639 A CN 104462639A CN 201410547816 A CN201410547816 A CN 201410547816A CN 104462639 A CN104462639 A CN 104462639A
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Abstract
The invention discloses a fine carving machining method for patterns on the bottom surface of a mould cavity. A relatively independent pattern program is cut through the most appropriate machining range, and then an actual machining program is obtained. The machining method avoids the phenomena of over-cutting, cutter bouncing and cutter jumping in the machining process. The program is simple, the calculation amount of after-treatment is not large, and the storage space occupied by the program is small. In the actual machining process, the transmission speed of data is smooth, the phenomena of pause and nesting of data transmission are avoided, and the accuracy of the machined patterns on the bottom surface of the mould cavity is high. For some irregular patterns on the bottom surface of the mould cavity, the machining rules can be better found after the machining range is enlarged and are not damaged when the program after calculation is cut, and the machining effect is better.
Description
Technical field
The present invention relates to mold cavity bottom surface decorative pattern finishing impression process technology, especially the process technology of irregular decorative pattern in die cavity.
Background technology
Automobile lamp being carved with the decorative pattern of various difformity and texture, playing luminous intensity distribution and decoration function, the Design of Dies of automobile lampshade and the finishing impression processing technology of decorative pattern, is an important step in automobile lampshade mold Design and manufacturing process.The outmost surface that take shape in product of mold cavity bottom surface decorative pattern after injection moulding, the first participates in luminous intensity distribution effect, first will meet the requirement of state compulsion standard; It two is decorative appearance effect, and this is one of its topmost function, requires extremely strict.But, be limited to current processing real standard and the characteristic of machining tool, for the way that mold cavity bottom surface processing patterns has never had.At the Design Stage in early stage, deviser considers actual manufacturing technology, generally all can avoid designing this type of decorative pattern.If this type of decorative pattern have to be designed, be all generally take electrocorrosion process technology and EDM, but the decorative pattern of this kind of method processing is more coarse, and can not control its size and precision, human factor is too much.Though there is now minute surface electrocorrosion process technology, but its process time is long, and cost is excessive, and the machine tool investment in early stage is also larger, so, how to process the difficult problem in the urgent need to address having become automobile lamp manufacturing enterprise compared with the decorative pattern in deep-small hole one class mould.
Summary of the invention
The object of this invention is to provide the finishing impression job operation of a kind of mold cavity bottom surface decorative pattern, make the die cavity bottom surface pattern precision that processes higher, particularly add man-hour carrying out high-precision decorative pattern finishing impression, little mosaic grid and cutter lines is not had to occur, the surface profile flat smooth after processing.
The technical solution used in the present invention is:
A finishing impression job operation for mold cavity bottom surface decorative pattern, comprises the following steps:
1) decorative pattern designs separately: in product Pattern Design process, according to the spatial relation of decorative pattern, determine U direction and the V direction of decorative pattern, that is the profile border of U, V direction of decorative pattern and die cavity in the same way; And fairing and matching are carried out to decorative pattern: fairing is to the decorative pattern on same direction, and the enterprising Row sum-equal matrix of three-dimensional trend after projecting to die cavity bottom surface, makes it not have offset, namely carries out cutting arrow and is connected; Matching is to end to end in U direction and V direction of decorative pattern, and in the projecting section of decorative pattern on its die cavity bottom surface, U can not antarafacial but have intersection point to curve and V to curve; Require that the area of decorative pattern is greater than the bottom surface of die cavity simultaneously;
2) design of mould: during Design of Dies, is first designed to the die cavity bottom surface in light face; Again patterned surface is attached to separately on the bottom surface of die cavity;
3) determination of processing patterns scope: first divide the range of work: the first sidewall of processing cavity, takes the tool path pattern of WCUT to carry out the finishing of sidewall, then reprocesses the bottom surface of die cavity, takes the tool path pattern of SRFPKT to carry out finishing; Bottom surface adds man-hour must in two steps: first carry out finishing to the bottom surface without decorative pattern, to excise process redundancy, for processing patterns is cleared away the obstacles below; Just process decorative pattern again, because of above without surplus, so the processing of decorative pattern only needs finishing, if decorative pattern sagitta is higher, then want finishing after first roughing;
The processing key key element of mold cavity bottom surface decorative pattern establishes the range of work, when calculating the range of work of decorative pattern, the range of work should be amplified, the calculating of decorative pattern program is namely first carried out with a larger virtual boundary line, face during calculating is only with the face selecting separately decorative pattern, the program drawn after such calculating compares fairing and level and smooth, enters cutting above simultaneously, will draw final mold cavity bottom surface processing patterns program with the outline line calculated to decorative pattern program; The connection adjustment of program to be carried out after cutting, make the cutter lifting of calling program, empty cutter, feed, withdrawing all within the scope of safety value;
4) generation of cutter path: the position of feed, withdrawing, processing, empty feed sets mark respectively, and according to finishing impression process principle and respective algorithms, obtain finishing impression processed file;
5) postpositive disposal: finishing impression processing G code is directly generated by the aftertreatment of cutter location file, selects different post-processed file, generates the G code program that corresponding lathe can directly read, directly read by lathe and run according to different lathe.
Job operation of the present invention, is that relatively independent decorative pattern program is carried out cutting by the most appropriate range of work, thus obtains the most real job sequence.Such job operation, the mistake avoided in process is cut, play cutter and lifts phenomenon.Because program is comparatively simple, the calculated amount of aftertreatment is not too large, so the storage space that program takies is relatively little.Add man-hour actual, the transmission speed of data is smoothly, there is not pause and the nesting phenomenon of data transmission, makes the die cavity bottom surface pattern precision that processes higher.For some irregular die cavity bottom surface decorative patterns, after the amplification range of work, its processing rule and rule can be found out better, this rule and rule can't be destroyed carrying out cutting to the program after calculating, make processing effect better.Particularly add man-hour carrying out high-precision decorative pattern finishing impression, do not have little mosaic grid and cutter lines to occur, the surface profile flat smooth after processing, and programming data amount neither be very large, facilitate calculation by program.
Embodiment
Decorative pattern finishing impression job operation in dark cavity mould, comprises the following steps:
1. decorative pattern designs separately: in product Pattern Design process, according to the spatial relation of decorative pattern, determines U direction and the V direction of decorative pattern, that is U, V direction of decorative pattern is normal and the profile border of die cavity in the same way; And fairing and matching are carried out to decorative pattern: fairing is to the decorative pattern on same direction, and the enterprising Row sum-equal matrix of three-dimensional trend after projecting to die cavity bottom surface, makes it not have offset, namely carries out cutting arrow and is connected; Matching is to end to end in U direction and V direction of decorative pattern, and in the projecting section of decorative pattern on its die cavity bottom surface, U can not antarafacial but have intersection point to curve and V to curve, makes the comparatively fairing and level and smooth of the decorative pattern that designs like this.
In the process, what pay close attention to is large for the required area more final than us of Pattern Design, must could provide foundation like this for later process.And when running into irregular decorative pattern, the way of this amplification, can find arrangement rule and the mode of decorative pattern better, provide better algorithm for during programming.But, in most cases, all to design according to product size when we design decorative pattern, add and subtract finally by Boolean calculation and obtain final mathematical model.The present invention but requires not Boolean calculation, makes to exist a kind of not only independent but also relation associated between the two.So in this design phase, require that the area of decorative pattern is greater than the bottom surface of die cavity, decorative pattern and product can't be allowed to carry out Boolean calculation, doing like this is convenience admissible more some more factor when programming simultaneously.
2. the design of mould: when obtaining product data, should first basis not have dapple data to carry out the design of mould, but simultaneously, the incidence relation between decorative pattern and product must be retained, in use Unigraphics design process, it has individual proper noun, namely a kind of " parameters relationship ".As long as do not delete this parameters relationship in the design process, so just can design arbitrarily mould, all can not have influence on the character of patterned surface.At the end of Design of Dies, this parameters relationship related together imports in programming software, uses for programming.
When designing mould, decorative pattern is in this characteristic of the bottom surface of die cavity emphasis to consider, so the flowing of plastic cement when will consider injection moulding and the release problems of shaping rear mold.Consider that the draft angle of sidewall is enough large, consider round-corner transition between sidewall and bottom surface, this fillet will conveniently process when processing decorative pattern in the lump.That is to consider in this process that the convenient and actual requirement of processing combines, take into account the two.
3, the determination of processing patterns scope: determine the range of work and processing technology, and set basic machined parameters according to the object of processing with requiring, be the generation prescribed direction of cutter path.
For the processing of this mold cavity bottom surface decorative pattern, what stand in the breach is divide the range of work.First should the sidewall of processing cavity, take the tool path pattern of WCUT to carry out the finishing of sidewall; Thereafter reprocess the bottom surface of die cavity, generally take the tool path pattern of SRFPKT to carry out finishing.Bottom surface adds man-hour must in two steps: first carry out finishing to the bottom surface without decorative pattern, to excise process redundancy, for processing patterns is cleared away the obstacles below; Just process decorative pattern again, because of above without surplus, so the processing of decorative pattern generally only need consider finishing, if decorative pattern sagitta is higher, then will consider finishing after first roughing.
The processing key key element of mold cavity bottom surface decorative pattern establishes the range of work.Now apply PowerMILL software and carry out accurate Calculation, various processing technology and parameter will be considered when calculating, just cannot have changed once establishment, otherwise can make mistakes.The result calculated is that PowerMILL software can provide an outline line, and this outline line is exactly the actual range of work of decorative pattern.
But when calculating the program of decorative pattern, suitably should amplify the range of work, the calculating of decorative pattern program is namely first carried out with a larger virtual boundary line, face during calculating is only with the face selecting separately decorative pattern, the program drawn after such calculating compares fairing and level and smooth, and program also can be fairly simple.In PowerMILL software, with the outline line calculated, cutting is entered to decorative pattern program above, final mold cavity bottom surface processing patterns program will be drawn.Suitably to carry out the connection adjustment of program after cutting, make the cutter lifting of calling program, empty cutter, feed, withdrawing all within the scope of safety value.
4, the generation of cutter path: at careful check program and after carrying out the simulation of software, just can be optimized cutter path, adjustment machined parameters, respectively mark is set to the position of feed, withdrawing, processing, empty feed, and according to finishing impression process principle and respective algorithms, obtain finishing impression processed file.
5, postpositive disposal: after also safety is confirmed to process simulation, just can select different post-processed file according to different lathe, generate the G code program that corresponding lathe can directly read, directly read by lathe and run, finishing impression processing G code is directly generated by the aftertreatment of cutter location file.
Claims (1)
1. a finishing impression job operation for mold cavity bottom surface decorative pattern, is characterized in that: comprise the following steps:
1) decorative pattern designs separately: in product Pattern Design process, according to the spatial relation of decorative pattern, determine U direction and the V direction of decorative pattern, that is the profile border of U, V direction of decorative pattern and die cavity in the same way; And fairing and matching are carried out to decorative pattern: fairing is to the decorative pattern on same direction, and the enterprising Row sum-equal matrix of three-dimensional trend after projecting to die cavity bottom surface, makes it not have offset, namely carries out cutting arrow and is connected; Matching is to end to end in U direction and V direction of decorative pattern, and in the projecting section of decorative pattern on its die cavity bottom surface, U can not antarafacial but have intersection point to curve and V to curve; Require that the area of decorative pattern is greater than the bottom surface of die cavity simultaneously;
2) design of mould: during Design of Dies, is first designed to the die cavity bottom surface in light face; Again patterned surface is attached to separately on the bottom surface of die cavity;
3) determination of processing patterns scope: first divide the range of work: the first sidewall of processing cavity, takes the tool path pattern of WCUT to carry out the finishing of sidewall, then reprocesses the bottom surface of die cavity, takes the tool path pattern of SRFPKT to carry out finishing; Bottom surface adds man-hour must in two steps: first carry out finishing to the bottom surface without decorative pattern, to excise process redundancy, for processing patterns is cleared away the obstacles below; Just process decorative pattern again, because of above without surplus, so the processing of decorative pattern only needs finishing, if decorative pattern sagitta is higher, then want finishing after first roughing;
The processing key key element of mold cavity bottom surface decorative pattern establishes the range of work, when calculating the range of work of decorative pattern, the range of work should be amplified, the calculating of decorative pattern program is namely first carried out with a larger virtual boundary line, face during calculating is only with the face selecting separately decorative pattern, the program drawn after such calculating compares fairing and level and smooth, enters cutting above simultaneously, will draw final mold cavity bottom surface processing patterns program with the outline line calculated to decorative pattern program; The connection adjustment of program to be carried out after cutting, make the cutter lifting of calling program, empty cutter, feed, withdrawing all within the scope of safety value;
4) generation of cutter path: the position of feed, withdrawing, processing, empty feed sets mark respectively, and according to finishing impression process principle and respective algorithms, obtain finishing impression processed file;
5) postpositive disposal: finishing impression processing G code is directly generated by the aftertreatment of cutter location file, selects different post-processed file, generates the G code program that corresponding lathe can directly read, directly read by lathe and run according to different lathe.
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| CN201410547816.6A CN104462639B (en) | 2014-10-16 | 2014-10-16 | A kind of finishing impression processing method of mold cavity bottom surface decorative pattern |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111151985A (en) * | 2020-01-07 | 2020-05-15 | 天津银宝山新科技有限公司 | Method for treating and preventing flicking knife |
| CN112606615A (en) * | 2020-12-14 | 2021-04-06 | 江苏文光模具技术有限公司 | Method for engraving Song style characters on molding surface of injection mold |
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| JP2001067391A (en) * | 1999-08-27 | 2001-03-16 | Ricoh Co Ltd | Three-dimenisonal form processing method and recording medium recording program for executing the processing method |
| CN101980221A (en) * | 2010-10-25 | 2011-02-23 | 江苏文光车辆附件有限公司 | Processing of patterned surface in carving processing |
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| JPH07319526A (en) * | 1994-05-25 | 1995-12-08 | Sharp Corp | Nc data generating method |
| JP2001067391A (en) * | 1999-08-27 | 2001-03-16 | Ricoh Co Ltd | Three-dimenisonal form processing method and recording medium recording program for executing the processing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111151985A (en) * | 2020-01-07 | 2020-05-15 | 天津银宝山新科技有限公司 | Method for treating and preventing flicking knife |
| CN112606615A (en) * | 2020-12-14 | 2021-04-06 | 江苏文光模具技术有限公司 | Method for engraving Song style characters on molding surface of injection mold |
| CN112606615B (en) * | 2020-12-14 | 2021-12-14 | 江苏文光模具技术有限公司 | Method for engraving Song style characters on molding surface of injection mold |
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