CN104199386A - Feature based cartridge receiver lug boss top surface milling track rapid generation method - Google Patents
Feature based cartridge receiver lug boss top surface milling track rapid generation method Download PDFInfo
- Publication number
- CN104199386A CN104199386A CN201410443845.8A CN201410443845A CN104199386A CN 104199386 A CN104199386 A CN 104199386A CN 201410443845 A CN201410443845 A CN 201410443845A CN 104199386 A CN104199386 A CN 104199386A
- Authority
- CN
- China
- Prior art keywords
- boss
- face
- isolated island
- automatically
- flat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Numerical Control (AREA)
Abstract
The invention discloses a feature based cartridge receiver lug boss top surface milling track rapid generation method, and belongs to the technical field of CAM (Computer-Aided Manufacturing). The feature based cartridge receiver lug boss top surface milling track rapid generation method is characterized by comprising the steps of: firstly, reading a cartridge receiver model and a cartridge receiver lug boss feature result, automatically building island and un-island lug boss top surface milling regions through analyzing the lug boss feature information, selecting to automatically generate or manually input processing technical information needed by processing the lug boss top surface by aiming at the planar and non-planar conditions of the lug boss top surface and according to data in a processing resource library, and generating a lug boss top surface processing track automatically and rapidly. The feature based cartridge receiver lug boss top surface milling track rapid generation method is high in efficiency, high in accuracy, strong in procedure standardization and high in knowledge reusability, can efficiently reduce repeated workload, meanwhile supports batch process of single and multiple lug bosses, is strong in flexibility, and can meet with different demands of engineering personnel.
Description
Technical field
The present invention relates to a kind of CAM technology, especially a kind of aero-engine casing manufacturing technology, specifically a kind of aero-engine casing boss end face Milling Process track rapid generation based on feature.
Background technology
Aeromotor is the power source of aircraft, along with the raising day by day of aeromotor thrust-weight ratio, not only the structural design of aero-engine casing is had higher requirement, the manufacture of casing is also proposed to higher challenge, and at present casing adopts that titanium alloy, high temperature alloy etc. are high temperature resistant, hard-cutting material more; In structure, taking runner hub face as the circumferential branch's column of main body island boss, part thinnest part is only that 2-3mm is thick, belongs to archipelago small island complex thin-wall structural member.In casing digital control processing, because its complex structure, accuracy requirement are high, very strong for programming technologist's experience dependence.The NC Machining Program work of aero-engine casing at present is mainly carried out on some commercialization CAM platforms, as the UG NX of Siemens, the Pro/E of PTC etc.In the time using these softwares to carry out the establishment of job sequence, need to manually click a large amount of geometric element structure machining areas, a large amount of machined parameters need to be manually set, the workload of programming is very large, in addition in the time of artificial programming, often causes the less stable of Programming's quality due to human negligence, the human factor such as lack experience, later stage need to be carried out in conjunction with a large amount of simulation work the optimization of program, the standardization deficiency that causes programming, inefficiency, accumulation of knowledge is poor.
In view of above problem is badly in need of a kind of method that can automatically generate fast boss end face Milling Process track, be 201410188103.5 at application number, denomination of invention is in the Chinese patent of " aero-engine casing characteristic recognition method ", casing part has been carried out to characterizing definition and feature identification, be the combination of a series of ring groove features and boss feature by casing Parts Recognition, for proposition of the present invention lays a solid foundation.
Summary of the invention
Object of the present invention is for the automatic tool rail generate pattern lacking in current CAM system aero-engine casing boss end face Milling Process, and the problem such as existing machining prgraming efficiency is low, of poor quality, dirigibility is not enough, a kind of casing boss end face Milling Process track rapid generation based on feature is proposed.
Technical scheme of the present invention is:
A kind of casing boss end face Milling Process track rapid generation based on feature, first its feature reads casing model and casing boss feature result, by analyzing boss characteristic information, automatically build the machining area of isolated island and the milling of non-isolated island boss end face, be plane and two kinds of situations of on-plane surface for boss end face, according to the data in operation resource storehouse, can select automatically to generate or manually input the processing technology information of required processing boss end face, automatically generate fast boss end face machining locus.
Concrete steps comprise:
Step 1: under CAM environment, by automatically reading boss characteristic information or manually clicking the mode of face, obtain one or more boss characteristic faces to be processed row;
Step 2: analyze each boss characteristic face column information, boss feature is divided into isolated island boss and non-isolated island boss two classes, and combined process rule base, obtain the balance information of boss end face and side, automatically build the end face Milling Process region of isolated island boss and non-isolated island boss;
Step 3: according to the data in operation resource storehouse, adopt the method automatically and manually combining, carry out processing technology decision-making for flat-top boss and two kinds of situations of non-flat-top boss, obtain the processing method of boss end face milling;
Step 4: in conjunction with flat-top boss end face machining area and processing scheme, automatically generate the slabbing finishing cutter rail of flat-top isolated island and non-isolated island boss end face;
Step 5: in conjunction with non-flat-top boss end face machining area and processing scheme, the mode of operation of maturation in Automatically invoked CAM software, boss end face Milling Process region and machined parameters automatic assignment, in respective operations, and are automatically calculated to cutter rail, generate non-flat-top isolated island and the capable finishing track of cutting of non-isolated island boss end face.
Boss characteristic face row to be processed described in step 2 mainly comprise two classes: the end face of boss and the side of boss.The invention provides automatically and manual two kinds of modes obtain boss characteristic face row, and two kinds of modes all support the extraction that single and multiple boss characteristic faces are listed as or click, can freely be determined according to actual needs by operating personnel, specific as follows:
1) automatically obtain boss characteristic face row: by reading casing feature recognition result, automatically from feature recognition result file, extract end face and the side-information of required boss.
2) manually obtain boss characteristic face row: by manually clicking the end face of the boss in model, and find and be the protruding face being connected with end face with boss end face outer shroud, i.e. boss side surfaces, finally obtains boss characteristic face row.
The end face Milling Process region that step 3 builds isolated island boss and non-isolated island boss automatically mainly comprises the extraction of boss end face outer shroud, and the judgement of boss type, boss end face side margins are obtained, end face outer shroud drives limit bias treatment, specific as follows:
1) the outer annular edge row of the boss end face that extraction has obtained by the mode of automatic or manual.
2) corresponding relation of analysis outer annular edge row and boss side surfaces, in the time that outer annular edge quantity equals side quantity, boss is isolated island boss, in the time that outer annular edge quantity is greater than side quantity, boss is non-isolated island boss.
3), based on process rule storehouse, by analyzing the operation work step before the milling of boss end face, determine that before boss end face milling operation, the machining state of boss end face and side, obtains the surplus that boss end face and side are left, or is manually arranged by engineering staff.
4) the convex-concave connectivity of analysis end face outer annular edge, protruding fillet is defined as to soft border, recessed fillet is defined as to bounds, for isolated island boss, its end face outer shroud drives Dou Weiruan border, limit, based on side process redundancy, outwards to be setovered in soft border, the end face outer shroud that finally obtains isolated island boss drives limit; For non-isolated island boss, its end face outer shroud driving limit comprises soft border and also comprises bounds, on the basis on the soft border of biasing, bounds two ends are extended and interrupt processing with soft border, soft or hard closing of the frontier forms non-isolated island end face outer shroud and drives limit the most at last.
Step 4, according to operation resource file, adopts the mode automatically and manually combining, and carries out processing technology decision-making for flat-top boss and two kinds of situations of non-flat-top boss, mainly comprise processing mode decision-making, processing sequence decision-making, cutter decision-making and machined parameters decision-making, specific as follows:
1) the employing plane milling processing mode that processing mode decision-making is plane by boss end face, boss end face is that nonplanar employing row is cut processing mode.
2) processing sequence decision-making, the processing sequence that the shortest processing sequence of pitching-in is provided and distributes by layer, and can manually be sorted by engineering staff.
3) cutter decision-making, according to machining area end face type and size, and rapidoprint information, and according to tool type in tool magazine, select several cutters that length-diameter ratio is suitable, and can be selected by engineering staff.
4) machined parameters is determined, in conjunction with operation resource file, with reference in the past ripe machined parameters combination, determines end face process redundancy, axial stratification, and radial cut is wide, and the necessary machined parameters such as the speed of mainshaft, speed of feed, and can be revised by engineering staff.
Step 5 is in conjunction with flat-top boss end face machining area and processing scheme, and the slabbing finishing cutter rail that automatically generates flat-top isolated island and non-isolated island boss end face refers to:
1) for isolated island flat-top boss, drive edge casing revolving shaft direction point up and down farthest by analyzing end face outer shroud, and drive limit in conjunction with end face outer shroud, generate corresponding flat milling cutter rail;
2) for non-isolated island flat-top boss, in conjunction with processing scheme, drive the bounds in limit by translation outer shroud, and drive limit in conjunction with other outer shrouds, generate plain milling cutter rail.
Step 6 is in conjunction with non-flat-top boss end face machining area and processing scheme, the mode of operation of maturation in Automatically invoked CAM software, boss end face Milling Process region and machined parameters automatic assignment, in respective operations, and are automatically calculated to cutter rail, generate non-flat-top isolated island and the capable finishing track of cutting of non-isolated island boss end face.
The invention has the beneficial effects as follows:
The end face milling track that the present invention can realize the boss of aero-engine casing flat-top and non-flat-top generates fast, and counting yield is high, accuracy is high, program specification is strong, knowledge reuse is high, effectively reduce repeated workload, the batch processing of simultaneously supporting single and multiple boss, dirigibility is strong, can meet engineering staff's different demands.
Brief description of the drawings
Fig. 1 is casing boss end face Milling Process track rapid generation process flow diagram of the present invention;
Fig. 2 is that casing part and casing boss characteristic face list intention, and Q is casing model, and wherein A is casing boss end face; B is casing boss side surfaces;
Fig. 3 is that casing boss end face convex-concave connects outer annular edge schematic diagram, and Q is casing part, for flat-top boss, non-flat-top boss, the boss three types that is connected with ring groove sidewall, A
oETfor protruding connection outer annular edge, A
oEAfor recessed connection outer annular edge
Fig. 4 is holographic attribute face edge graph limit angle faces angle computation method schematic diagram, and A is limit angle computation method, and B is face angle computation method, wherein f
1, f
2be two adjacent faces, e is intersection edges, p
midfor the mid point of intersection edges, n in A
1, n
2for adjacent surface f
1, f
2at p
midnormal vector, choose f
1, f
2in arbitrary be reference field, choose f here
1for reference field, determine the direction n of limit e according to right-hand rule
e, n
1to n
2angle be designated as θ, if θ > π, corner degree is 2 π-θ, if θ < π, corner degree is θ; N in B
1, n
2for adjacent surface f
1, f
2main normal direction, choose equally f
1for reference field, determine the direction n of limit e according to right-hand rule
e, n
1to n
2angle be designated as θ, if θ > π, face angle is 2 π-θ, if θ < π, face angle is θ;
Fig. 5 is that end face outer shroud drives limit to build schematic diagram, A
oETfor protruding connection outer annular edge, A
oEAfor recessed connection outer annular edge, δ
sfor side margins, a is the skew of convex-concave fillet and prolongation process, and b is that convex-concave fillet tailoring process c is that outer shroud drives limit to determine;
Fig. 6 is casing boss end face Milling Process Sequential Decision schematic diagram, and wherein a is layering processing processing sequence, and I, II, III are three layers of boss, and the direction of arrow is every layer of processing sequence, and b is bee-line Machining Sequencing, and arrow mode is boss processing sequence;
Fig. 7 is the shortest empty cutter processing sequence algorithm flow chart of casing boss;
Fig. 8 is casing isolated island boss flattened layer milling cutter rail schematic diagram, wherein P
u, P
dfor limiting up and down a little, D
uDfor limiting up and down a little axial vertical range along end face, ae is actual wide value, the TP of cutting
0for initial manufacture track, TP
0-nfor whole machining locus;
Fig. 9 is the non-isolated island boss of casing flattened layer milling cutter rail schematic diagram, wherein A
oEAfor outer annular edge bounds, P
u, P
dfor limiting up and down a little, D
uDfor limiting up and down a little axial vertical range along end face, ae is actual wide value, the TP of cutting
0for initial manufacture track, TP
0-nfor whole machining locus;
Figure 10 is casing boss end face milling cutter rail schematic diagram, and a, b are flat-top isolated island and non-isolated island boss end face milling cutter rail, and c is non-flat-top boss end face milling cutter rail, and wherein TP is machining locus.
Figure 11 is aero-engine casing characteristic recognition method process flow diagram involved in the present invention.
Embodiment
By reference to the accompanying drawings technical scheme of the present invention to be elaborated below.
As Figure 1-10 shows.
A kind of casing boss end face Milling Process track rapid generation based on feature, first read casing model and casing boss feature result, by analyzing boss characteristic information, automatically build the machining area of isolated island and the milling of non-isolated island boss end face, be plane and two kinds of situations of on-plane surface for boss end face, according to the data in operation resource storehouse, can select automatically to generate or manually input the processing technology information of required processing boss end face, automatically generate fast boss end face machining locus.As shown in Figure 1, concrete steps are as follows for its flow process:
1, under CAM environment, by automatically reading boss characteristic information or manually clicking the mode of face, obtain one or more boss characteristic faces row, boss characteristic face row mainly comprise two classes: the end face of boss and the side of boss.This method provides automatically and manual two kinds of modes obtain boss characteristic face row, and two kinds of modes all support the extraction that single and multiple boss characteristic faces are listed as or click, and can freely be determined according to actual needs by operating personnel.
1) automatically obtain boss characteristic face row: by reading casing feature recognition result, automatically from feature recognition result file, extract end face and the side-information of required boss, as shown in A, B in Fig. 2.
2) manually obtain boss characteristic face row: by manually clicking the end face of the boss in model, and find and be the protruding face being connected with end face with boss end face outer shroud, i.e. boss side surfaces, finally obtains boss characteristic face row, specific as follows:
1. build the holographic attribute face edge graph of casing part, obtain the boundary information of each surface element:
Holographic attributed graph is on the basis of attribute face edge graph, to have added the more information on limit and information of face for feature identification, and its content comprises: the information on limit: the unique identification on limit, Huo Xu limit, real limit mark, curve or straight line identify, limit belongs to interior ring or outer shroud mark, adjacent surface angle, limit angle, edge lengths; The information of face: the main normal direction of the unique identification of face, real face or empty face mark, curved surface or plane mark, face, the quantity of phase cross surface, the area of face, the inner and outer ring number of face.
2. obtain boss end face outer annular edge, as A in Fig. 3
oETand A
oEAshown in.
3. based on holographic attribute face edge graph, taking boss end face as closing keyboard, find with outer annular edge and be the protruding connected face that is connected, as boss side surfaces, the face angle that protruding annexation decision condition is two adjacent surfaces element is greater than 180 degree, corner degree is not 0, and wherein the computing method of corner degree and face angle as shown in Figure 4.
2, analyze each boss characteristic face column information, boss feature is divided into isolated island boss and non-isolated island boss two classes, and combined process rule base, obtain the balance information of boss end face and side, automatically build the end face Milling Process region of isolated island boss and non-isolated island boss, mainly comprise boss end face outer shroud and extract, the judgement of boss type, boss end face, side margins are obtained, and end face outer shroud drives limit bias treatment, and concrete grammar is as follows:
1) the outer annular edge row of the boss end face that extraction has obtained by the mode of automatic or manual, as shown in AOET and AOEA in Fig. 3.
2) corresponding relation of analysis outer annular edge row and boss side surfaces, in the time that outer annular edge quantity equals side quantity, boss is isolated island boss, as shown in I in Fig. 3, in the time that outer annular edge quantity is greater than side quantity, boss is non-isolated island boss, as shown in II in Fig. 3.
3) consider actual machining process, the milling of boss end face is often before boss Profile milling, carry out after boss roughing, there is the state of certain process redundancy in side end face, based on process rule storehouse, by analyzing the operation work step before the milling of boss end face, determine before boss end face milling operation the surplus δ that boss end face and side are left
tand δ
s, or manually arranged by engineering staff.
4) the convex-concave connectivity of analysis end face outer annular edge, protruding fillet is defined as to soft border, recessed fillet is defined as to bounds, for isolated island boss, its end face outer shroud drives Dou Weiruan border, limit, based on side process redundancy, outwards to be setovered in soft border, the end face outer shroud that finally obtains isolated island boss drives limit; For non-isolated island boss, its end face outer shroud driving limit comprises soft border and also comprises bounds, on the basis on the soft border of biasing, bounds two ends are extended and interrupt processing with soft border, soft or hard closing of the frontier forms non-isolated island end face outer shroud and drives limit the most at last, as shown in Figure 5, specific as follows:
1. for isolated island boss, as shown in Figure 5 a, by its all end face outer annular edge, along place boss end face, δ outwards setovers
tafter, replace and deposit A in
oET, drive limit as its end face outer shroud;
2. for non-isolated island boss, equally by its all end face outer annular edge along place boss end face, δ outwards setovers
tafter, replace and deposit A in
oET, deposit end face outer shroud bounds in A
oEA;
3. also need A for non-isolated island boss
oETlimit row two-end-point extends to A
oEAlimit row are also interrupted, and as shown in Figure 5 b, only leave center section, by A
oETand A
oEAall limits join end to end and seal, and as shown in Figure 5 c, drive limit as end face outer shroud.
3, according to the data in operation resource storehouse, adopt the method automatically and manually combining, carry out processing technology decision-making for flat-top boss and two kinds of situations of non-flat-top boss, obtain the processing method of boss end face milling, mainly comprise processing mode decision-making, processing sequence decision-making, cutter decision-making and machined parameters decision-making, as shown in Figure 6, specific as follows:
1) processing mode decision-making, can obtain the face attribute of boss end face according to the holographic attribute face edge graph having built, the employing layer milling processing mode that is plane by boss end face, and the employing row that boss end face is curved surface is cut processing mode.
2) processing sequence decision-making, according to processing experimental knowledge, can select by layer processing with by two kinds of modes of the shortest processing of pitching-in, that the boss of whole casing is highly arranged by casing revolving shaft by the processing mode of layer, is same layer boss on sustained height, adds man-hour according to the preferential mode of layer, as shown in Figure 6 a, be divided into tri-layers of I, II, III, arrow is depicted as every layer of processing sequence;
Another kind is according to the shortest feed distance, and according to bee-line searching order between boss, its flow process as shown in Figure 7, ensures that between boss, pitching-in is the shortest, and as shown in Fig. 6 b, the direction of arrow is processing sequence.
Except above two kinds of modes, can also click boss end face according to engineering staff, click order by record, as processing sequence.
2) cutter decision-making, according to machining area end face type and size, and rapidoprint information, and according to tool type in tool magazine, select several cutters that length-diameter ratio is suitable, and can be selected by engineering staff.
1. according to boss end face type, flat-top boss is selected flat-bottomed cutter or the cutter processing of band base angle, and non-flat-top cutter adopts ball head knife processing.
2. in conjunction with part material information, and machining area size, in tool magazine, mate, choose several cutters that length-diameter ratio is suitable, and can be selected by engineering staff.
3) machined parameters is determined, comprises end face process redundancy, axial stratification, and radial cut is wide, and the necessary machined parameters such as the speed of mainshaft, speed of feed, specific as follows:
1. the matching analysis through technological parameter storehouse by tool-information and material information, in conjunction with the empirical value of end face Milling Process, automatically setting cut depth ap, cut the parameters such as wide ae, speed of feed.Also can, by operating personnel manual amendment, determine final parameter value simultaneously.
2. according to boss end face surplus δ
twith cutting-in value ap, determine axial stratification number n,
if n has fraction part to be rounded and add 1, equally also can be by operating personnel manual amendment.
4, in conjunction with flat-top boss end face machining area and processing scheme, automatically generate the slabbing finishing cutter rail of flat-top isolated island and non-isolated island boss end face, as shown in Figure 8, specific as follows:
1) for isolated island flat-top boss, drive edge casing revolving shaft direction point up and down farthest by analyzing end face outer shroud, and drive limit in conjunction with end face outer shroud, generate plain milling cutter rail;
1. calculate and limit up and down a little, by obtaining the parametric equation of end face outer annular edge, calculate along casing revolution axial distance casing end face farthest with nearest point, as limiting up and down a little, as P in Fig. 8
u, P
dshown in;
2. calculate and actually cut wide and generate initial cutter rail, calculate P
u, P
d2 distances along end face, as D in Fig. 8
uDshown in, actual cutting is widely
and N rounds, and generate initial cutter rail, as TP in Fig. 8
0shown in;
3. be offset initial cutter orbit making all passes, according to the actual initial cutter rail of wide skew of cutting, obtain after all passes, drive limit to carry out cutting and two ends are extended respectively to a tool radius distance R with boss outer shroud, as final cutter rail, as TP in Fig. 8
0-nshown in.
2) for non-isolated island flat-top boss, in conjunction with processing scheme, drive the bounds in limit by translation outer shroud, and drive limit in conjunction with other outer shrouds, generate plain milling cutter rail.
1. obtaining outer annular edge bounds is A
oEA, extract bounds mid point as P
d, do this normal plane for bounds, meet at a P with other outer annular edge
u, as shown in Figure 9;
2. calculate and actually cut wide and generate initial cutter rail, calculate P
u, P
dthe distance of 2, as D in Fig. 9
uDshown in, actual cutting is widely
and N rounds, and bounds is setovered to R-cr apart from as initial cutter rail, wherein R is tool radius, and cr is cutter base angle radius, as TP in Fig. 9
0shown in;
3. be offset initial cutter orbit making all passes, according to the actual initial cutter rail of wide skew of cutting, obtain after all passes, drive limit to carry out cutting and two ends are extended respectively to a tool radius distance with boss outer shroud, as final cutter rail, as TP in Fig. 9
0-nshown in.
Flat-top isolated island and non-isolated island plane milling finishing cutter rail are as shown in Figure 10 a, b.
5, in conjunction with boss end face machining area and processing scheme, the mode of operation of maturation in Automatically invoked CAM software, by boss end face Milling Process region and machined parameters automatic assignment in respective operations, and automatically calculate cutter rail, generate non-flat-top isolated island and the capable finishing track of cutting of non-isolated island boss end face, as shown in figure 10, specific as follows:
For non-flat-top boss, the row calling in CAM software is cut process operation mode, and machining area and process decision result automatic assignment, in operation, and are calculated to cutter rail fast, generates the capable finishing track of cutting of non-flat-top boss end face, as shown in Figure 10 c.
According to the method described above, can be according to boss end face machining area and processing scheme, automatically generate boss end face Milling Process track.
As " the aero-engine casing characteristic recognition method " on basis of the present invention as shown in figure 11, also can be referring to Chinese patent 201410188103.5.Concrete steps comprise:
Step 1: analyze aero-engine casing design feature, definition meets ring groove feature and the boss characteristic type that casing Milling Process requires;
Step 2: casing part is pre-seted and extract all of part, side information;
Step 3: carry out faceted search based on seed face, die joint and expansion rule, build casing ring groove feature and boss feature;
Step 4: extract all information of casing ring groove feature, obtain feature recognition result, deposit XML file in.Described analysis aero-engine casing design feature, ring groove feature and boss characteristic type that definition meets the requirement of casing Milling Process refer to:
By analytical engine box structure feature and processing characteristics, casing machining feature is defined as to the combination of ring groove feature and boss feature, wherein ring groove feature comprises end face, side, base angle face and bottom surface, and the long boss feature that has circumferential distribution on bottom surface, wherein each boss feature comprises again end face, side, base angle face and bottom surface.
Described to casing part pre-set and extract all of part, side information refers to:
Pre-set to comprise and set machining coordinate system and select die joint, regulation is elected Z axis as casing axis of rotation direction, and X, Y-axis are not construed as limiting; Die joint is selected the k level of and normal direction parallel Z axis vertical with Z axis; The geological information that wherein face of part, side information comprise face, limit and face, limit are adjacent the annexation of geometric element.
Described seed face is that the seed face of ring groove feature is the conical surface, cylinder and the annular surface on casing part based on expanding the regular initial value that carries out feature construction; The seed face of boss feature is the bottom surface row of ring groove feature.
When described structure casing ring groove feature, first expand rule according to casing seed face according to bottom surface and obtain correct ring groove bottom surface; Expand rule according to bottom surface according to base angle face again and obtain correct base angle face; Expand rule according to base angle face according to side again and obtain correct side; Finally expand rule according to side according to end face and obtain correct end face.
When described structure casing boss feature, first expand rule according to boss seed face (being the bottom surface of boss) according to boss base angle face and obtain correct boss base angle face; Expand rule according to base angle face according to side again and obtain correct boss side surfaces; Finally expand rule according to side according to end face and obtain correct boss end face.
All information of casing ring groove feature deposit XML file in by the order of end face, side, base angle face, bottom surface, boss, and wherein each boss feature comprises boss end face, side, base angle face and bottom surface.
The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.
Claims (7)
1. the casing boss end face Milling Process track rapid generation based on feature, first its feature reads casing model and casing boss feature result, by analyzing boss characteristic information, automatically build the machining area of isolated island and the milling of non-isolated island boss end face, be plane and two kinds of situations of on-plane surface for boss end face, according to the data in operation resource storehouse, can select automatically to generate or manually input the processing technology information of required processing boss end face, automatically generate fast boss end face machining locus.
2. method according to claim 1, is characterized in that it comprises the following steps:
Step 1: under CAM environment, by automatically reading boss characteristic information or manually clicking the mode of face, obtain one or more boss characteristic faces to be processed row;
Step 2: analyze each boss characteristic face column information, boss feature is divided into isolated island boss and non-isolated island boss two classes, and combined process rule base, obtain the balance information of boss end face and side, automatically build the end face Milling Process region of isolated island boss and non-isolated island boss;
Step 3: according to the data in operation resource storehouse, adopt the method automatically and manually combining, carry out processing technology decision-making for flat-top boss and two kinds of situations of non-flat-top boss, obtain the processing method of boss end face milling;
Step 4: in conjunction with flat-top boss end face machining area and processing scheme, automatically generate the slabbing finishing cutter rail of flat-top isolated island and non-isolated island boss end face;
Step 5: in conjunction with non-flat-top boss end face machining area and processing scheme, mode of operation in Automatically invoked CAM software, by boss end face Milling Process region and machined parameters automatic assignment in respective operations, and automatically calculate cutter rail, generate non-flat-top isolated island and the capable finishing track of cutting of non-isolated island boss end face.
3. method as claimed in claim 2, is characterized in that described boss characteristic face row to be processed mainly comprise two classes: the end face of boss and the side of boss; Adopt automatic or manual two kinds of modes to obtain boss characteristic face row, and two kinds of modes all support the extraction that single and multiple boss characteristic faces are listed as or click, can freely be determined according to actual needs by operating personnel;
1) automatically obtain boss characteristic face row: by reading casing feature recognition result, automatically from feature recognition result file, extract end face and the side-information of required boss;
2) manually obtain boss characteristic face row: by manually clicking the end face of the boss in model, and find and be the protruding face being connected with end face with boss end face outer shroud, i.e. boss side surfaces, finally obtains boss characteristic face row.
4. method as claimed in claim 2, is characterized in that the end face Milling Process region of described automatic structure isolated island boss and non-isolated island boss mainly comprises the extraction of boss end face outer shroud, the judgement of boss type, boss end face side margins obtains and end face outer shroud drives limit bias treatment:
1) the outer annular edge row of the boss end face that extraction has obtained by the mode of automatic or manual;
2) corresponding relation of analysis outer annular edge row and boss side surfaces, in the time that outer annular edge quantity equals side quantity, boss is isolated island boss, in the time that outer annular edge quantity is greater than side quantity, boss is non-isolated island boss;
3), based on process rule storehouse, by analyzing the operation work step before the milling of boss end face, determine that before boss end face milling operation, the machining state of boss end face and side, obtains the surplus that boss end face and side are left, or is manually arranged by engineering staff;
4) the convex-concave connectivity of analysis end face outer annular edge, protruding fillet is defined as to soft border, recessed fillet is defined as to bounds, for isolated island boss, its end face outer shroud drives Dou Weiruan border, limit, based on side process redundancy, outwards to be setovered in soft border, the end face outer shroud that finally obtains isolated island boss drives limit; For non-isolated island boss, its end face outer shroud driving limit had both comprised soft border and had also comprised bounds, on the basis on the soft border of biasing, bounds two ends are extended and interrupt processing with soft border, soft or hard closing of the frontier forms non-isolated island end face outer shroud and drives limit the most at last.
5. method as claimed in claim 2, it is characterized in that described according to operation resource file, adopt the mode automatically and manually combining, carry out processing technology decision-making for flat-top boss and two kinds of situations of non-flat-top boss and mainly comprise processing mode decision-making, processing sequence decision-making, cutter decision-making and machined parameters decision-making:
1) the employing plane milling processing mode that processing mode decision-making is plane by boss end face, boss end face is that nonplanar employing row is cut processing mode;
2) processing sequence decision-making, the processing sequence that the shortest processing sequence of pitching-in is provided and distributes by layer, and can manually be sorted by engineering staff;
3) cutter decision-making, according to machining area end face type and size, and rapidoprint information, and according to tool type in tool magazine, select several cutters that length-diameter ratio is suitable, and can be selected by engineering staff;
4) machined parameters is determined, in conjunction with operation resource file, with reference in the past ripe machined parameters combination, determines end face process redundancy, axial stratification, and radial cut is wide, and the necessary machined parameters such as the speed of mainshaft, speed of feed, and can be revised by engineering staff.
6. method as claimed in claim 2, is characterized in that described combination flat-top boss end face machining area and processing scheme, and the slabbing finishing cutter rail that automatically generates flat-top isolated island and non-isolated island boss end face refers to:
1) for isolated island flat-top boss, drive edge casing revolving shaft direction point up and down farthest by analyzing end face outer shroud, and drive limit in conjunction with end face outer shroud, generate corresponding flat milling cutter rail;
2) for non-isolated island flat-top boss, in conjunction with processing scheme, drive the bounds in limit by translation outer shroud, and drive limit in conjunction with other outer shrouds, generate plain milling cutter rail.
7. method as claimed in claim 2, it is characterized in that the non-flat-top boss of described combination end face machining area and processing scheme, mode of operation in Automatically invoked CAM software in respective operations, and is automatically calculated boss end face Milling Process region and machined parameters automatic assignment on cutter rail, is generated non-flat-top isolated island and the capable finishing track of cutting of non-isolated island boss end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410443845.8A CN104199386B (en) | 2014-09-02 | 2014-09-02 | Feature based cartridge receiver lug boss top surface milling track rapid generation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410443845.8A CN104199386B (en) | 2014-09-02 | 2014-09-02 | Feature based cartridge receiver lug boss top surface milling track rapid generation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104199386A true CN104199386A (en) | 2014-12-10 |
| CN104199386B CN104199386B (en) | 2017-04-19 |
Family
ID=52084687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410443845.8A Active CN104199386B (en) | 2014-09-02 | 2014-09-02 | Feature based cartridge receiver lug boss top surface milling track rapid generation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104199386B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570948A (en) * | 2015-01-16 | 2015-04-29 | 南京航空航天大学 | Hole feature machining method for spaceflight sheet part |
| CN110253060A (en) * | 2019-07-23 | 2019-09-20 | 湖南南方通用航空发动机有限公司 | A kind of processing method of inclined-plane boss |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5119309A (en) * | 1989-04-26 | 1992-06-02 | General Motors Corporation | Feature based method of designing automotive panels |
| EP0501494B1 (en) * | 1991-02-28 | 1998-05-20 | Sony Corporation | Shape data processing method |
| CN102629289A (en) * | 2012-03-05 | 2012-08-08 | 南京航空航天大学 | Automatic generation method of plunge milling toolpath for corner features |
| CN103264183A (en) * | 2013-05-23 | 2013-08-28 | 沈阳黎明航空发动机(集团)有限责任公司 | Complex receiver part shape cone following milling method |
| CN103336485A (en) * | 2013-06-18 | 2013-10-02 | 南京航空航天大学 | Rapid generating method of milling path of web of airplane structural member |
| CN103926879A (en) * | 2014-05-06 | 2014-07-16 | 南京航空航天大学 | Aviation engine crankcase feature recognition method |
-
2014
- 2014-09-02 CN CN201410443845.8A patent/CN104199386B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5119309A (en) * | 1989-04-26 | 1992-06-02 | General Motors Corporation | Feature based method of designing automotive panels |
| EP0501494B1 (en) * | 1991-02-28 | 1998-05-20 | Sony Corporation | Shape data processing method |
| CN102629289A (en) * | 2012-03-05 | 2012-08-08 | 南京航空航天大学 | Automatic generation method of plunge milling toolpath for corner features |
| CN103264183A (en) * | 2013-05-23 | 2013-08-28 | 沈阳黎明航空发动机(集团)有限责任公司 | Complex receiver part shape cone following milling method |
| CN103336485A (en) * | 2013-06-18 | 2013-10-02 | 南京航空航天大学 | Rapid generating method of milling path of web of airplane structural member |
| CN103926879A (en) * | 2014-05-06 | 2014-07-16 | 南京航空航天大学 | Aviation engine crankcase feature recognition method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570948A (en) * | 2015-01-16 | 2015-04-29 | 南京航空航天大学 | Hole feature machining method for spaceflight sheet part |
| CN104570948B (en) * | 2015-01-16 | 2017-07-11 | 南京航空航天大学 | Space flight plate parts hole characteristic processing method |
| CN110253060A (en) * | 2019-07-23 | 2019-09-20 | 湖南南方通用航空发动机有限公司 | A kind of processing method of inclined-plane boss |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104199386B (en) | 2017-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20230280714A1 (en) | Computerized tool path generation | |
| Moroni et al. | Functionality-based part orientation for additive manufacturing | |
| CN106125666B (en) | Using cutting force fluctuation as the Machining of Curved Surface cutter path planing method of constraint | |
| CN103336485B (en) | Rapid generating method of milling path of web of airplane structural member | |
| CN103235556A (en) | Feature-based numerical-control method for processing and manufacturing complicated parts | |
| CN102637216B (en) | Method for generating numerical-control side milling machining tool path for complicated curved surfaces | |
| EP3356896B1 (en) | System and method for machining blades, blisks and aerofoils | |
| CN103365243B (en) | Method for rapidly generating corner side milling process path | |
| CN104475843B (en) | A kind of processing method of annular class casing radially narrow slot | |
| CN102591261B (en) | Multilayer numerical control programming method for flexible hole formation on large-scale wing part | |
| Meng et al. | Optimal barrel cutter selection for the CNC machining of blisk | |
| CN102527554A (en) | Spray gun track planning method for free-form surface spraying robot | |
| Mohaghegh et al. | Improvement of reverse-engineered turbine blades using construction geometry | |
| CN104182795A (en) | Numerical control machining cutting parameter optimization method of airplane structural member on the basis of intermediate feature | |
| CN104007696B (en) | Aircraft structural component cavity complex corner residual region tool path generation method | |
| CN113377069A (en) | Method for generating mixed milling cutter path for machining blisk blade profile | |
| CN105880953A (en) | Method for processing aviation blade | |
| CN102357666A (en) | Three-coordinate end milling method for blade with freeform surface by using flat-bottomed cutter | |
| CN104570948A (en) | Hole feature machining method for spaceflight sheet part | |
| CN103926879A (en) | Aviation engine crankcase feature recognition method | |
| CN109396764A (en) | A kind of processing method of mixed-flow block cast runner | |
| CN104199386A (en) | Feature based cartridge receiver lug boss top surface milling track rapid generation method | |
| CN103927426B (en) | Aero-engine blisk characteristic recognition method | |
| CN105278461A (en) | Method for integral machining of complex curved surface | |
| CN104267669A (en) | Method for automatically generating case annular groove milling rough machining tracks on basis of features |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |