CN102708424B - Scheme planning method of reconfigurable manufacturing process - Google Patents

Abstract

The invention provides a scheme planning method of a reconfigurable manufacturing process, comprising the following steps of: forming natural combining procedure unit sets through establishing machining information matrixes; combining the natural combining procedure unit sets to form a plurality of different procedure unit plans and integrating into different work procedure section combining schemes; then carrying out bidirectional crossed combination on work procedure section schemes to form a plurality of machining process schemes of different parts; and finally, formulating the reconfigurable manufacturing process facing to part cluster machining. According to the scheme planning method disclosed by the invention, the machining process schemes of the different parts are formed through establishing a machining information matrix, combining procedure units and establishing work procedure sections, and the reconfigurable manufacturing process facing to the part cluster machining is formulated; the rapid conversion of a machining function of a reconfigurable production line is realized and the scheme planning method combines advantages of a special machine production line and a flexible production line; and the contradiction of efficient and low-cost machining and production flexibility in existing batch machining is effectively solved, and the scheme planning method of the reconfigurable manufacturing process has very important effect on the popularization and the application of reconfigurable manufacturing.

Description

A kind of restructural manufacture technology scheme planing method

Technical field

The invention belongs to machinery manufacturing technology field, relate to a kind of parts machining process programme planning method with the operation that stylizes, particularly a kind of restructural manufacture technology scheme planing method towards batch machining.

Background technology

Batch machining device therefor mainly contains two classes at present: the special production line that the first is made up of special plane, special production line is for a certain part manufacturing procedure and Custom Design, there is no redundancy feature, cost of investment is low, can process by multitool/many main shafts simultaneously, have efficiently, processed edge cheaply, its greatest drawback is to be difficult to the product process requirements that reply changes, therefore special plane production line is only applicable to the production in enormous quantities of single variety, and the special plane production line of current many automobiles, tractor manufacturer just faces the difficulty of product remodeling.Its two flexible production line being formed by machining center (or numerically-controlled machine), its function deposit is many, can tackle different process requirements, and cost of investment is high; Owing to adopting the processing of hilted broadsword order, lack low cost, the high efficiency processed edge of special plane production line; For batch machining, the processing method of part to be processed changes little, causes flexible production line function utilization rate very low, causes processing cost to increase.Change along with the market demand is uncertain and globalization competition, the batch production of traditional single product is also rapidly to becoming in batches, becoming kind future development, adopts traditional special plane production line or flexible production line to be all difficult to solve contradiction between efficient in current batch machining, low cost processing and production flexibility.

Summary of the invention

The object of the present invention is to provide a kind of restructural manufacture technology scheme planing method stylizing that has, for the organization plan reconstruct of Reconfigurable Manufacturing System functional configuration and Reconfigurable Machine Tools provides foundation,, low cost efficient in batch machining industry to solve processed the contradiction between production flexibility.

The object of the present invention is achieved like this, a kind of restructural manufacture technology scheme planing method, form nature combining process unit set by setting up technique processing, described natural combining process unit set is merged into multiple different operation unit, and be integrated into different operation section assembled schemes, then described operation section scheme is carried out to bidirectional crossed combination, form multiple different parts machining process scheme, finally make the restructural manufacture technology scheme of Part-oriented family processing.

Specifically comprise the steps:

Step 1, set up technique processing, this technique processing comprises: the operation type of machining feature sequence number, machining feature type, this machining feature, positioning datum, coordinate position, hole machining feature the information such as machining feature, homology machining feature numbering that must complete before corresponding smallest principal aperture, this machining feature;

Step 2, sets up nature combining process unit: by same orientation, with operation type and use the machining feature of same machining benchmark to carry out nature merging;

Step 3, sets up operation unit: described natural combining process unit is merged, form multiple different operation unit; In an operation unit or comprise a machining feature, a corresponding main tapping, or comprise multiple machining feature, a corresponding axles box;

Step 4, sets up operation section: described operation unit is carried out integrated, form different operation section assembled schemes;

Step 5, sets up parts machining process scheme: set up operation section assembled scheme is carried out to bidirectional crossed combination, form multiple different parts machining process scheme;

Step 6, formulate the restructural manufacture technology scheme of Part-oriented family processing: by parts machining process scheme similarity comparative approach, select the most similar parts machining process scheme as restructural manufacture technology scheme, realize the quick conversion of the machining functions of Reconfigurable Machine Tools.

In step 6, the similarity between two process programs more in accordance with the following methods and computing formula carry out:

The operation hop count amount of supposing part 1 process program A is K _a, the operation hop count amount of part 2 process program B is K _b, process program A is m with corresponding in B (having similarity) operation hop count amount, process program A and B similarity are:

$S=\frac{1}{K_A+K_B-m}\underset{i=1}{\overset{m}{\mathrm{\Σ}}}{\mathrm{\α}}_i---\left(1\right)$

${\mathrm{\α}}_i=\frac{1}{L_A+L_B-n}\underset{j=1}{\overset{n}{\mathrm{\Σ}}}{\mathrm{\β}}_j---\left(2\right)$

α in formula _i---process program A and corresponding operation section E in B _awith E _bbetween similarity coefficient;

L _a---operation section E _ain operation element number;

L _b---operation section E _bin operation element number;

N---operation section E _awith E _bin corresponding (thering is similarity) operation element number;

β _i---operation section E _awith E _bsimilarity coefficient between middle corresponding operation unit;

Because the each part in part to be processed group has similarity, in global coordinate, can, according to the similarity between the operation unit of corresponding orientation, judge from aspects such as processing type, machining feature quantity, locus, machining feature place, step is as follows:

If be 1. all Noodles processing, its similarity coefficient β _j=1;

If be 2. all hole class processing, the included machining feature quantity in operation unit may have multiple, and at this moment the similarity coefficient between operation unit is:

${\mathrm{\β}}_j=\frac{k}{H_A+H_B-k}---\left(3\right)$

H in formula _a---belong to operation section E _aoperation unit in machining feature quantity;

H _b---belong to operation section E _boperation unit in machining feature quantity;

K---corresponding (thering is similarity) machining feature quantity in two operation unit;

Determine the similarity of the processing method of two kinds of parts by said method, and express with quantized versions, using similarity coefficient the greater as restructural manufacture technology scheme.

In step 2, described set up nature combining process unit be adopt retrieval mode by same orientation in technique processing, with operation type, use the machining feature of same machining benchmark to merge, and inspection meet axles box condition, meet above-mentioned condition person and just form nature combining process unit set F _j={ D ₀... _j, wherein D ₀for belonging to F _jmachining feature sequence number; J is nature combining process unit number.

In step 3, the natural combining process unit that merge is carried out to the judgement of technological datum fusion conditions, not meeting technological datum fusion conditions person can not merge; For two natural merge cells F _i, F _j, have the machining benchmark of following 3 kinds of situations to merge criterion:

Benchmark merges criterion 1: if natural combining process unit F _i, F _jmachining benchmark identical, two natural combining process unit can merge form operation unit;

Benchmark merges criterion 2: if natural combining process unit F _iin manufacturing procedure feature be nature combining process unit F _jmachining benchmark, two natural combining process unit can merge and form operation unit, and F _imachining benchmark using as merge after operation unit machining benchmark;

Benchmark merges criterion 3: if two natural combining process unit F _i, F _jmachining benchmark be to complete by identical machining benchmark, F _iwith F _jcan merge and form operation unit, and the machining benchmark that requires high person using position of related features is as the operation unit machining benchmark after merging.

In step 4, in same operation section, the machining benchmark of operation unit will meet the compatible principle of benchmark, for two-step unit E _iand E _j, there is the compatible principle of benchmark of following 2 kinds of situations:

The compatible principle 1 of benchmark: if operation unit E _iand E _jmachining benchmark identical, E _iand E _jcan be combined in an operation section;

The compatible principle 2 of benchmark: if operation unit E _jmachining benchmark be operation unit E _iin machining feature, E _iand E _jcan be combined in an operation section, and by E _imachining benchmark as the machining benchmark of operation section.

The present invention has following beneficial effect:

1, the present invention is by setting up technique processing, combining process unit, setting up operation section, form multiple different parts machining process scheme, and formulate the restructural manufacturing process of Part-oriented family processing, realize the quick conversion of the machining functions of Reconfigurable Machine Tools, effectively solved in current batch machining industry the contradiction between efficient, low cost processing and production flexibility.

2, the present invention, in conjunction with the modular construction of Reconfigurable Machine Tools and the feature of each functions of modules autonomy, has ensured that the structure of Reconfigurable Machine Tools and function realize quick reconfiguration (function conversion), to adapt to the different process requirements of part family inside.Each functional module of Reconfigurable Machine Tools can be the parts with self-movement function or support functions, may be also certain execution unit (as main tapping, or axles box).Execution unit on every Reconfigurable Machine Tools has multiple, adopts parallel processing mode, can reach the high-level efficiency processing of special plane.

3, restructural manufacture technology scheme provided by the invention is mainly Reconfigurable Manufacturing System planning and the reconstruct of Reconfigurable Machine Tools organization plan provides foundation, Reconfigurable Manufacturing System wherein is mainly made up of Reconfigurable Machine Tools, the functional configuration of Reconfigurable Machine Tools is to customize according to the parts machining process scheme in part family (having one group of part group of similar machining feature) to organization plan reconstruct, such configuration can ensure that it reaches the high efficiency, low cost processing effect of special plane, can realize the inner processing transformation of part family by reconfiguring of Reconfigurable Machine Tools functional module again simultaneously, there is certain flexible working ability.

4, the present invention breaks through the constraint of tradition according to Experience Design parts machining process scheme, multiple possible parts machining process scheme can be provided, for restructural manufacture technology scheme preferably provides condition, ensure that Reconfigurable Manufacturing System has the advantage of special plane production line and flexible production line concurrently, not only can tackle the product process requirements of variation, and there is again the feature that cost is low, efficiency is high.

Brief description of the drawings

Fig. 1 is the corresponding relation schematic diagram between operation of the present invention unit and Reconfigurable Machine Tools execution unit;

Fig. 2 is non-homogeneous machining feature merging process schematic diagram in the present invention;

Fig. 3 is part to be processed 1 schematic appearance in the embodiment of the present invention;

Fig. 4 is Fig. 3 rear view;

Fig. 5 is part to be processed 2 schematic appearance in the embodiment of the present invention;

Fig. 6 is Fig. 5 rear view.

Embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.

A kind of restructural manufacture technology scheme planing method, the structure based on Reconfigurable Machine Tools and functional characteristics, patent of the present invention is by setting up operation unit and operation section is planned the process program of part to be processed family.Fig. 1 be operation unit, operation section with Reconfigurable Machine Tools execution unit between corresponding schematic diagram.An execution unit on the corresponding Reconfigurable Machine Tools in operation unit (main tapping or axles box), the operation section being formed by multiple concerned process steps unit combination is by an operation content that Reconfigurable Machine Tools completes of correspondence.

Specifically carry out in the steps below:

Step 1: set up technique processing.This technique processing mainly comprises: coordinate position in global coordinate of the operation type of machining feature sequence number, machining feature type, this machining feature, positioning datum, this machining feature, hole machining feature the information such as machining feature, homology machining feature numbering that must complete before corresponding smallest principal aperture, this machining feature.

The present invention adopts each part machining information in the matrix description part family of L × 14, and wherein L represents processed feature sum, expresses the relevant machining information of this machining feature, with a line element of this matrix wherein, D ₀for natural order number, represent this machining feature sequence number; D ₁for orientation code (D ₁=1,2 ..., 7, wherein 1～6 represent 6 orientation, 7 represent oblique orientation); D ₂for characteristic type code (1 is plane, and 2 is unthreaded hole, and 3 is threaded hole ...); D ₃for operation type, (11 for rough milling, and 12 is half finish-milling, and 13 is finish-milling; 21 is heavy boring, and 22 is half right boring, and 23 is right boring; 31 is boring, and 32 is reaming, and 33 is fraising, and 34 is tapping; 41 is corase grind, and 42 is fine grinding, and 43 for grinding; 51 is broaching, and 52 is scraping; 61 is rough turn, and 62 is finish turning; 71 is planing ...); D ₄, D ₅, D ₆be respectively and add positioning datum in man-hour (representing by machining feature sequence number); D ₇, D ₈, D ₉be respectively X, Y, the Z coordinate of this machining feature in global coordinate; D ₁₀for hole adds smallest principal aperture corresponding to man-hour; D ₁₁for the machining feature (being called for short processing sequence numbering) that must complete, represent processing sequence information before this machining feature; D ₁₂for homology machining feature numbering." homology machining feature " in the present invention referred to the serial manufacturing procedure feature that final machining feature is required, for example, certain threaded hole (final machining feature) will be through drill-over, attack two procedures just can complete, therefore derivative Drilling operation feature, the tapping machining feature of this threaded hole is just homology machining feature.Homology machining feature adopts same coordinate position to express.Homology machining feature numbering is exactly the numbering naturally of final machining feature.D ₁₃for the serial number in a certain homology machining feature, as the D of the Drilling operation feature in hole processing ₁₃be 1, the D of tapping machining feature ₁₃be 2.

Step 2: set up nature combining process unit.Adopt retrieval mode by same orientation in technique processing, with operation type, use the working procedure feature of same machining benchmark to merge, and whether inspection meet axles box condition, meets above-mentioned condition person and just form nature combining process unit set F _j={ D ₀... _j, wherein D ₀for belonging to F _jmachining feature sequence number; J is nature combining process unit number.

If j, k two hole machining feature meet following condition, just think that two machining feature meet axles box condition, wherein d _minbe two main shaft bearing hole minimum wall thickness (MINI W.)s.

$\sqrt{{(D_7^j-D_7^k)}^2+{(D_8^j-D_8^k)}^2+{(D_9^j-D_9^k)}^2}>\frac{D_{10}^j+D_{10}^k}{2}+d_{\min }---\left(1\right)$

Step 3: set up operation unit.By same orientation, can use same technological datum, non-homogeneous machining feature, feeding cutting data difference natural combining process unit little, that can meet axles box condition to merge.For example, the operation contents such as rough bore, right boring hole and boring, reaming, fraising, tapping are merged, the interference between these operations is little, can complete by an axles box, therefore can merge in same operation unit.When nature combining process mesh merging, note following some:

1. this merging is to carry out between the natural combining process unit of non-homogeneous machining feature.Because homology machining feature is to process in order, therefore can not merge the merging process separately of the hole class that combining objects is same orientation or the non-homogeneous machining feature of Noodles between homology machining feature.

2. the natural combining process unit that will merge is carried out to technological datum and merge judgement, not meeting technological datum fusion conditions person can not merge, and will be directly as operation cell processing.For two natural merge cells F _i, F _j, exist the machining benchmark of following 3 kinds of situations to merge criterion:

Benchmark merges criterion 1: if natural combining process unit F _i, F _jmachining benchmark identical, two natural combining process unit can merge;

Benchmark merges criterion 2: if natural combining process unit F _iin manufacturing procedure feature be nature combining process unit F _jmachining benchmark, two natural combining process unit can merge, and F _imachining benchmark using as merge after operation unit machining benchmark;

Benchmark merges criterion 3: if natural combining process unit F _i, F _jmachining benchmark be to complete by identical machining benchmark, F _iwith F _jcan merge, and the machining benchmark that requires high person using position of related features is as the operation unit machining benchmark after merging.

3. the processing sequence of the operation unit after natural combining process mesh merging is relevant with merging situation, and the present invention adopts dendrogram mode to find out operation unit.2 non-homogeneous machining feature as shown in Figure 2 merge, and in the time that " rough bore " merges with " boring ", " right boring hole " just may merge with " reaming " or " fraising ", so just can obtain the planning sheet element plan of 3 kinds of different merging modes.

Step 4: the operation unit of different azimuth is arranged according to processing sequence separately, then carried out two-way order assembly, set up operation section scheme.Operation section scheme after assembly is carried out to the compatible principle inspection of benchmark and scheme judge, the reasonable operation section scheme of determining.

Machining cell in same operation section adopts parallel processing mode to complete by a Reconfigurable Machine Tools, and the processing of each operation unit does not interfere with each other, and machining benchmark is unified.Below noting in the time of dividing step section scheme some:

1. in same operation section, the cutting force difference of operation unit should not be too large.For example, the operation unit that roughing cutting force is larger should not be placed on same operation section with finishing; Milling should not be combined in an operation section with the light cut such as bore hole, boring planning sheet unit.

2. in same operation section, the machining benchmark of operation unit will meet " the compatible principle of benchmark ", ensures that in operation section, operation unit has unified machining benchmark, ensures that under clamped one time, completing each operation unit in operation section processes.

The compatible principle 1 of benchmark: if operation unit E _iand E _jmachining benchmark identical, E _iand E _jcan be combined in an operation section.

The compatible criterion 2 of benchmark: if operation unit E _jmachining benchmark be operation unit E _iin machining feature, E _iand E _jcan be combined in an operation section, and by E _imachining benchmark as the machining benchmark of this operation section.

Step 5: set up operation section scheme is combined, form multiple different restructural manufacture technology scheme.

The key step of working out restructural manufacture technology scheme taking operation section as fundamental element as: 1. Noodles, the processing of hole class are arranged by its processing sequence respectively in the operation section scheme of different azimuth; The operation section scheme of 2. different azimuth being arranged by processing sequence is intersected two-way assembly, forms respectively Noodles and hole class processing method; 3. Noodles and hole class processing method are carried out to assembled arrangement, form pure Mechanical process plans; 4. thermal treatment, inspection and the operation such as auxiliary are rationally inserted in pure Mechanical process plans by technical requirement, form the machining process route scheme of part; 5. taking the processing sequence information in technique processing as foundation, the machining process route scheme of formed part is carried out to process program reasonableness test, reject the process program that does not meet processing sequence.

Step 6: the restructural manufacture technology scheme of Part-oriented family processing is preferred.Because Reconfigurable Machine Tools is to have processing flexibility in part to be processed group inside, selected restructural manufacture technology scheme should be to ensure that Reconfigurable Machine Tools is easily converted to another kind of part processing scheme from a kind of part process scheme, therefore need part family processing method to carry out similarity determination, using comparatively similar process program person as restructural manufacture technology scheme.

The present invention carries out the comparison of process program similarity from aspects such as process program layout, operation section content and operation location contents, and for ease of explanation, the present invention provides the comparative approach of part 1 and part 2 process program similaritys.The operation hop count amount of supposing part 1 process program A is K _a, the operation hop count amount of part 2 process program B is K _b, process program A is m with corresponding in B (having similarity) operation hop count amount, process program A and B similarity are:

$S=\frac{1}{K_A+K_B-m}\underset{i=1}{\overset{m}{\mathrm{\Σ}}}{\mathrm{\α}}_i---\left(2\right)$

${\mathrm{\α}}_i=\frac{1}{L_A+L_B-n}\underset{j=1}{\overset{n}{\mathrm{\Σ}}}{\mathrm{\β}}_j---\left(3\right)$

α in formula _i---process program A and corresponding operation section E in B _awith E _bbetween similarity coefficient;

L _a---order section E _ain operation element number;

L _b---operation section E _bin operation element number;

N---operation section E _awith E _bin corresponding (thering is similarity) operation element number;

β _i---operation section E _awith E _bsimilarity coefficient between middle corresponding operation unit.

Because the each part in part to be processed group has similarity, in global coordinate, can be according to the similarity between the operation unit of corresponding orientation, judge from aspects such as the operation type of machining feature, machining feature quantity, locus, machining feature place, step is as follows:

If be 1. all Noodles processing, its similarity coefficient β _j=1.

If be 2. all hole class processing, the included machining feature quantity in operation unit may have multiple, and at this moment the similarity coefficient between operation unit is:

${\mathrm{\β}}_j=\frac{k}{H_A+H_B-k}---\left(4\right)$

H in formula _a---belong to operation section E _aoperation unit in machining feature quantity;

H _b---belong to operation section E _boperation unit in machining feature quantity;

K---corresponding (similar) machining feature quantity in two operation unit.

Determine the similarity of certain process route scheme of two kinds of parts by said method, and express with quantized versions, using similarity coefficient the greater as restructural manufacture technology scheme.

Embodiment, is processed as example with the part family of two part compositions in certain Engine Series cylinder cap, applies method of the present invention and sets up restructural manufacture technology scheme.Fig. 3, Fig. 4 are part to be processed 1 outside drawing, and Fig. 5, Fig. 6 are the outside drawing of processing parts 2, and wherein 1～6 represents respectively 6 orientation, and in part 1, face machining feature represents with M, and hole machining feature represents with K; In part 2, face machining feature represents with N, and hole machining feature represents with J, and blank is aluminium alloy.Set up the restructural manufacture technology scheme of the part family of above-mentioned two part compositions according to following step of the present invention.

(1) set up the technique processing of two parts shown in table 1 and table 2, in table, sequence number is machining feature code name.As space is limited, in table, omit part machining information, but do not affected method introduction of the present invention.

(2) by the retrieval to technique processing, by same orientation, with operation type, use the machining feature of same machining benchmark to merge, and carry out axles box condition judgment, obtain the natural combining process unit of two parts of table 3 and table 4.

Table 1 part 1 technique processing

Table 2 part 2 technique processings

For example, can to form the sequence number shown in table 3 by the machining feature (rough bore) of sequence number 5,7,9,10 representative be 4 natural combining process unit F to 1 orientation in the part 1 of table 1 ₄={ 5,7,9,10} ₄, wherein 5,7 machining feature for coaxial aperture are, parallel adding, can adopt compound tool man-hour; Forming the sequence number shown in table 3 by 6,8 machining feature of sequence number in table 1 (right boring hole) is 5 natural combining process unit F ₅={ 6,8} ₅; Merge criterion according to machining benchmark and obtain corresponding processing sequence number (representing by nature combining process unit number), the machining feature that machining benchmark and natural combining process unit comprise is encoded and is represented by technique processing line number.

The natural combining process unit of table 3 part 1

The natural combining process of table 4 part 2 unit

(3) non-homogeneous natural combining process unit is further merged and form operation unit.The Noodles in same orientation, the processing of hole class and the processing of benchmark working procedure feature are merged respectively, for part 1, in the hole class processing in orientation 1 sequence number be 4,5 natural combining process unit respectively can with the sequence number natural combining process mesh merging that is 12, the following dendrogram mode that adopts is described by two kinds of planning sheet element plan processes of natural combining process mesh merging generation, in parantheses wherein, it is operation unit, between each operation unit, separate by "-", processing sequence is for from left to right; Sequence number is that 4 the natural combining process unit natural combining process unit processing sequence that is 12 with sequence number is number consistent, therefore the processing sequence number of operation unit (4+12) is 3 after merging; Sequence number is that the processing sequence of the natural combining process unit that is 12 from sequence number, 5 natural combining process unit is number different, and according to by rear principle, operation unit (5+12) processing sequence number is 4.

This example adopts plane and two pits locator meams as unified machining benchmark, and therefore the machining benchmark of operation unit is identical.

Part 2 merges two kinds of planning sheet element plans of gained in the processing of the hole in orientation 1 class:

(4) machining cell of different azimuth is carried out to sort merge and mark off operation section, then benchmark consistency condition carries out operation section scheme inspection, determine rational operation section scheme.

For the class manufacturing procedure unit, hole in 1,4 orientation of part, except operation unit 3 is as benchmark, processing must first complete, other operation unit of hole class processing are arranged as in order:

Form part 1 hole class operation unit combination through above-mentioned two-way order assembly and go out operation section scheme, an operation section scheme of planning sheet unit composition in square brackets, part operation section scheme is:

[(4+12),8,13,10]——[5,9,14,11] ———————————①

[(4+12)]——[5,8,13,10]——[9,14,11] ————————②

[(4+12)]——[8,13,10]——[5]——[9,14,11] ——————③

[(4+12),8]——[5,9]——[13,10]——[14,11] ——————④

[(4+12),8]——[5,9,13,10]——[14,11] ————————⑤

[(4+12),8,13]——[5,9,14,10]——[11]—————————⑥

Same method, the operation section scheme that part 1 Noodles machining is combined into is:

[1]——[2]——[6,7]————————⑦

[1]——[2,6,7] ——————————⑧

[1]——[2,6]——[7]————————⑨

[1]——[2,7]——[6]————————⑩

In above-mentioned 4 kinds of operation section schemes, the positioning datum of 6,7 operation unit is 1,3,4 machining feature, and the positioning datum of 3,4 machining feature is 2 machining feature, and therefore, here [2,6,7] can not form operation section scheme, only have operation section scheme 7. can use.

Part 2 is except operation unit 3 must first complete as benchmark processing, and the part operation section scheme that other operation unit combination of hole class processing go out is:

[(4+9),7,10]——[5,8,11]———————————①

[(4+9),10]——[5,11,7]——[8] ————————②

[(4+9)]——[5,10,7]——[11,8] ————————③

[4,10,7]——[(5+9),11,8]———————————④

[4,10]——[(5+9),11,7]——[8] ————————⑤

[4]——[(5+9),10,7]——[11,8] ————————⑥

The operation section scheme that part 2 Noodles manufacturing procedure unit combination go out is:

[1]——[2]——[6] —————————————⑦

[1]——[2,6]————————————————⑧

In above-mentioned 2 kinds of operation section schemes, 2 operation unit are machining benchmarks of the positioning datum of 6 machining feature, and therefore, here [2,6] can not form operation section scheme, only have operation section scheme 7. can use.

(5) generation of process program.The operation section scheme of the Noodles obtaining and hole class machining feature is carried out to cross arrangement, form kinds of processes route plan (as space is limited, the present invention does not consider thermal treatment and aided process), then the processing sequence information based in technique processing checks process program, rejects unreasonable scheme.

The part processing method of part 1 is as follows, and wherein 2., 3. scheme belongs to the asynchronous processing method of order:

[1]—[2]—[3]—[6,7]—[(4+12),8,13,10]—[5,9,14,11] ————①

[1]—[2]—[3]—[6,7]—[(4+12)]—[5,8,13,10]—[9,14,11]———②

[1]—[2]—[3]—[(4+12)]—[6,7]—[5,8,13,10]—[9,14,11]———③

[1]—[2]—[3]—[6,7]—[(4+12)]—[8,13,10]—[5]—[9,14,11] —④

[1]—[2]—[3]—[6,7]—[(4+12),8]—[5,9]—[13,10]—[14,11] —⑤

[1]—[2]—[3]—[6,7]—[(4+12),8]—[5,9,13,10]——[14,11]——⑥

[1]—[2]—[3]—[6,7]—[(4+12),8,13]—[5,9,14,10]—[11]———⑦

The part processing method of part 2 is as follows:

[1]—[2]—[3]—[6]—[(4+9),7,10]—[5,8,11] —————①

[1]—[2]—[3]—[6]—[(4+9),10]—[5,11,7]—[8] ————②

[1]—[2]—[3]—[6]—[(4+9)]—[5,10,7]—[11,8] ————③

[1]—[2]—[3]—[6]—[4,10,7]—[(5+9),11,8] —————④

[1]—[2]—[3]—[6]—[4,10]—[(5+9),11,7]—[8] ———⑤

[1]—[2]—[3]—[6]—[4]—[(5+9),10,7]—[11,8] ————⑥

(6) process alternative option of Part-oriented family.Process program between part 1 and part 2 is carried out to similarity comparison, utilize the process program calculating formula of similarity that the present invention sets up to obtain corresponding similarity, similarity value soprano will be served as part family restructural manufacture technology scheme.As space is limited, the scheme of only listing part 1 1. and 4 kinds of schemes of part 2 1.～similarity between is 4. respectively: 0.83,0.62,0.60 and 0.77.Can find out, in part 1 scheme 1. with part 2 in scheme similarity 1. larger, these 2 kinds of schemes can be elected restructural manufacture technology scheme as.

Claims (4)

1. a restructural manufacture technology scheme planing method, it is characterized in that: form nature combining process unit set by setting up technique processing, described natural combining process unit set is merged into multiple different operation unit, and be integrated into different operation section assembled schemes, then this operation section assembled scheme is carried out to bidirectional crossed combination, form multiple different parts machining process scheme, the restructural manufacture technology scheme of finally making the processing of Part-oriented family, specifically comprises the steps:

Step 1, set up technique processing, this technique processing comprises: the operation type of machining feature sequence number, machining feature type, this machining feature, positioning datum, coordinate position, hole machining feature machining feature, the homology machining feature numbering that must complete before corresponding smallest principal aperture, this machining feature;

Step 2, sets up nature combining process unit: by same orientation, with operation type and use the machining feature of same machining benchmark to carry out nature merging;

Step 3, sets up operation unit: described natural combining process unit is merged, form multiple different operation unit; In an operation unit or comprise a machining feature, a corresponding main tapping, or comprise multiple machining feature, a corresponding axles box;

Step 4, sets up operation section: described operation unit is carried out integrated, form different operation section assembled schemes;

Step 5, sets up parts machining process scheme: set up operation section assembled scheme is carried out to bidirectional crossed combination, form multiple different parts machining process scheme;

Step 6, formulate the restructural manufacture technology scheme of Part-oriented family processing: by parts machining process scheme similarity comparative approach, select the most similar parts machining process scheme as restructural manufacture technology scheme, realize the quick conversion of the machining functions of Reconfigurable Machine Tools

Similarity between two process programs more in accordance with the following methods and computing formula carry out:

The operation hop count amount of supposing part 1 process program A is K _a, the operation hop count amount of part 2 process program B is K _b, process program A is corresponding with B, and having similarity operation hop count amount is m, and process program A and B similarity are:

$S=\frac{1}{K_A+K_B-m}\underset{i=1}{\overset{m}{\mathrm{\Σ}}}{\mathrm{\α}}_i---\left(1\right)$

${\mathrm{\α}}_i=\frac{1}{L_A+L_B-n}\underset{j=1}{\overset{n}{\mathrm{\Σ}}}{\mathrm{\β}}_j---\left(2\right)$

α in formula _i---process program A and corresponding operation section E in B _awith E _bbetween similarity coefficient;

L _a---operation section E _ain operation element number;

L _b---operation section E _bin operation element number;

N---operation section E _awith E _bin corresponding, there is similarity operation element number;

β _i---operation section E _awith E _bsimilarity coefficient between middle corresponding operation unit;

Because the each part in part to be processed family has similarity, in global coordinate, can, according to the similarity between the operation unit of corresponding orientation, judge from aspects such as processing type, machining feature quantity, locus, machining feature place, step is as follows:

If be 1. all Noodles processing, its similarity coefficient β _j=1;

If be 2. all hole class processing, the included machining feature quantity in operation unit may have multiple, and at this moment the similarity coefficient between operation unit is:

${\mathrm{\β}}_j=\frac{k}{H_A+H_B-k}---\left(3\right)$

H in formula _a---belong to operation section E _aoperation unit in machining feature quantity;

H _b---belong to operation section E _boperation unit in machining feature quantity;

K---corresponding in two operation unit, there is similarity machining feature quantity;

Determine the similarity of the processing method of two kinds of parts by said method, and express with quantized versions, using similarity coefficient the greater as restructural manufacture technology scheme.

2. restructural manufacture technology scheme planing method as claimed in claim 1, it is characterized in that: in step 2, described set up nature combining process unit be adopt retrieval mode by same orientation in technique processing, with operation type, use the machining feature of same machining benchmark to merge, and check whether meet axles box condition, meet above-mentioned condition person and just form nature combining process unit set F _j={ D ₀... _j, wherein D ₀for belonging to F _jmachining feature sequence number; J is nature combining process unit number.

3. restructural manufacture technology scheme planing method as claimed in claim 2, is characterized in that: in step 3, the natural combining process unit that merge is carried out to technological datum and merge judgement, not meeting technological datum fusion conditions person can not merge; For two natural merge cells F _i, F _j, there is the machining benchmark of following 3 kinds of situations to merge criterion,

Benchmark merges criterion 1: if natural combining process unit F _i, F _jmachining benchmark identical, two natural combining process unit can merge;

Benchmark merges criterion 2: if natural combining process unit F _iin manufacturing procedure feature be nature combining process unit F _jmachining benchmark, two natural combining process unit can merge, and F _imachining benchmark using as merge after operation unit machining benchmark;

Benchmark merges criterion 3: if two natural combining process unit F _i, F _jmachining benchmark be to complete by identical machining benchmark, F _iwith F _jcan merge, and the machining benchmark that requires high person using position of related features is as the operation unit machining benchmark after merging.

4. restructural manufacture technology scheme planing method as claimed in claim 3, is characterized in that: in step 4, in same operation section, the machining benchmark of operation unit will meet the compatible principle of benchmark, for two-step unit E _iand E _j, there is the compatible principle of benchmark of following 2 kinds of situations:

The compatible principle 1 of benchmark: if operation unit E _iand E _jmachining benchmark identical, E _iand E _jcan be combined in an operation section;

The compatible principle 2 of benchmark: if operation unit E _jmachining benchmark be operation unit E _iin machining feature, E _iand E _jcan be combined in an operation section, and by E _imachining benchmark as the machining benchmark of operation section.