CN103020399A - Modular machine tool design method - Google Patents
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Abstract
The invention discloses a modular machine tool design method. The method comprises the following steps: firstly performing module division on a given machine tool by using an edge betweenness search algorithm according to functions, structural characteristics and processing and assembly conditions to establish a functional module library; secondly performing normalization on interfaces among functional modules by using a matching selection interface algorithm and establishing an interface database based on the interfaces; thirdly establishing a variant design library of all parts inside the functional modules; and finally performing combined modeling on the functional module library, the interface database and the variant design library in the software environment to obtain a three-dimensional model of the machine tool. The method can quickly obtain products, which can respond the demands on both performance and specification according to requirements of customers, and can realize the modular design of the machine tool.
Description
Technical field
The present invention relates to the Machine Tool design field, be specifically related to a kind of based on modular machine tool design method.
Background technology
Designing technique towards mass customization and mass customization is based upon on the modularization basis.The modular design of product is to carry out dividing and design a series of functional modules on the basis of functional analysis at the product to the difference in functionality in the certain limit or identical function different performance, different size.Selection by module can consist of different products with combination, has realized producing product variety as much as possible with limited resources by the combination to disparate modules.Product modular is the basis of enterprise product resource reuse, also is the key that realizes product configuration design and Variant Design.Product modular has considered product object, product is become the module of different purposes and performance according to Function Decomposition, and make interface (in conjunction with key element, the shape and size etc.) standardization of module, select different modules can form rapidly the product that satisfies various requirement.Modularization is at electronic equipment, and the application that numerous industries such as computing machine, software industry, automobile making, aircraft manufacturing are succeeded has also produced huge economic worth.Yet machine tool product is as the production machine tool of any engineering goods, and traditional design is still adopted in the at present design of machine tool product, and its design duration often needs more than 3 months.
Summary of the invention
Technical matters to be solved by this invention provides a kind of based on modular machine tool design method, and it can realize fast according to customer demand performance and the specification product of its demand of response, realizes the modular design to lathe.
For addressing the above problem, the present invention is achieved by the following scheme:
Based on modular machine tool design method, comprise the steps:
(1) according to function, design feature and process and assemble condition, adopts limit Jie to count searching algorithm given lathe is carried out Module Division, and set up accordingly function modules ground;
(1.1) provide inner all parts of given lathe assembly restriction formula each other;
(1.2) set up the assembly relation network according to component number and the assembly restriction between above-mentioned parts of given lathe;
(1.3) limit Jie's number on each bar limit in the assembly relation network of the given machine tool element of calculating;
(1.4) remove the limit that limit Jie in the network counts maximum, network is divided into some sub-networks;
(1.5) to each sub-network double counting limit Jie's number with remove the process that limit Jie in the network counts the limit of maximum, until the all-ones subnet network that decomposes meets the Module Division granularity of setting, this moment, the gained sub-network was the functional module that marks off;
(1.6) set up function modules ground according to the functional module that marks off, this function modules ground records the parts that each functional module comprises;
(2) adopt supporting option interface algorithm that the interface between functional module is carried out standardization, and set up accordingly interface database; The possibility of the relation of cooperatively interacting between this interface database writing function module functional module associated with it and total interface Change of types;
(3) set up the Variant Design storehouse of all parts of each functional module inside;
(3.1) parameters of all parts is classified, a class is changeless invariant parameter, and a class is the basic parameter that changes according to customer requirements, and a class is to change the derived parameter that respective change occurs with basic parameter and/or interface type;
(3.2) parameter value of each invariant parameter parts is stored;
(3.3) parameter value of each basic parameter parts is reserved, follow-uply manually inputted by customer requirements;
(3.4) each derived parameter parts is stored with the functional relation that the basic parameter parts change;
(4) above-mentioned functions module library, interface database and Variant Design storehouse are carried out the three-dimensional model that compositional modeling obtains lathe under software environment.
Described step (4) also further comprises afterwards carries out simulation analysis to the three-dimensional model after the modeling, obtaining structural stress, thermal stress, distortion and the mode value of analog simulation, and will above-mentioned each value and the structural stress, thermal stress, distortion and the mode value that specifically obtain under the applied environment compare; When each parameter value of analog simulation when each parameter value under the concrete applied environment conforms to, with the three-dimensional model output of setting up; When each parameter value of analog simulation when each parameter value under the concrete applied environment does not conform to, defective parameter value is derived the foundation of adjusting as follow-up Variant Design storehouse.
When step (1.3) to having no right undirected Acyclic Network when carrying out the search of limit Jie's number, its process is to adopt circulation to deposit successively in order all nodes of network and corresponding abutment points thereof in adjacency list with the data structure of adjacency list, then shortest path between all any two points that comprise this limit is searched on an optional limit successively from network, and record limit Jie's number on this limit, so circulation is until limit Jie's number on all limits is all obtained in the network.
Compared with prior art, the present invention locates and predicts the development of future products and client's individual demand after ripe seriation lathe sales data and order carry out data analysis to the enterprise type.On this basis, successfully realized: 1, according to conditions such as function, design feature and process and assemble, carried out Module Division; 2, by custom algorithm, reasonably the interface of intermodule carried out standardization; 3, realized the quick generation of customized module under the search of module and the Variant Design technology; 4, realized the Automatic Combined of module under software environment.By modular design so that the Machine Tool design cycle shortened to several hours from 3 months can finish.
Description of drawings
Fig. 1 is a kind of undirected Acyclic Network of having no right;
Fig. 2 is that limit Jie counts search routine figure;
Fig. 3 is the Module Division block diagram based on the poly-characteristic of complex network limit Jie's manifold;
Fig. 4 is planer-type milling machine assembly restriction network chart;
Fig. 5 is the Variant Design process flow diagram;
Fig. 6 is the combination flow chart of lathe.
Embodiment
The below is elaborated based on modular machine tool design method to the present invention is a kind of take planer-type milling machine as example:
Before product is carried out modular design, after at first needing the ripe seriation lathe sales data of enterprise type and order carried out data analysis, the development of future products and client's individual demand is located and predicted.On this basis, again lathe is carried out modularized processing.
1, according to function, design feature and process and assemble condition, adopts limit Jie to count searching algorithm given lathe is carried out Module Division, and set up accordingly function modules ground;
1.1, provide inner all parts of given lathe assembly restriction formula each other;
1.2, set up the assembly relation network according to component number and the assembly restriction between above-mentioned parts of given lathe;
1.3, calculate limit Jie's number on each bar limit in the assembly relation network of given machine tool element;
1.4, remove the limit that limit Jie in the network counts maximum, network is divided into some sub-networks;
1.5, to each sub-network double counting limit Jie's number with remove the process that limit Jie in the network counts the limit of maximum, until the all-ones subnet network that decomposes meets the Module Division granularity of setting, this moment, the gained sub-network was the functional module that marks off;
1.6, set up function modules ground according to the functional module that marks off, this function modules ground records the parts that each functional module comprises;
In the specific embodiment of the invention, according to modularization principle planer-type milling machine is designed, at first needing to introduce rational method carries out correct and efficient Module Division to planer-type milling machine, adopted the module partition method based on the number of boundary searching algorithm of complex network among the present invention, planer-type milling machine allomeric function and interface are estimated, finally successfully planer-type milling machine is divided into 11 modules, for the module combinations method research of subsequent module planer-type milling machine is laid a good foundation.The below is that limit Jie counts searching algorithm and is introduced to module partition method:
In network, limit Jie's number on a limit is defined as the number by the shortest path on this limit.According to the definition of limit Jie's number, it is as follows that limit Jie that can summarize certain bar limit counts computing formula:
In the formula: B
Ij---cross limit Jie's number on the limit that is formed by summit i and j; The number of vertex of n---network; P
Ijk---from summit k and through limit ij (or limit ji), the shortest path number on other summits in the network.
Limit Jie's number has reflected the role and influence power of limit in whole network between the corresponding node, is an important overall geometric sense, has very strong realistic meaning.Two network portions that Jie's number larger explanation this edge in limit connects are more intensive, and it is stronger to gather characteristic, if the be situated between limit of number maximum, limit is removed the little network that just can obtain two intensities.So analogize, a catenet can be divided into the little network of some intensities.If mechanical network just can be divided into whole mechanical system little module one by one, namely reach the purpose of Module Division.
Shortest path: in network, all the shortest paths of middle distance, path are called shortest path between any two nodes.The distance of shortest path is in two kinds of situation: if network is weighting network, and the weights summation on upper each limit, footpath that then shows the way; The summation of top, footpath number if network for having no right network, then shows the way.When the weights on limit in the weighting network were 1, weighting network is equivalent to had no right network, therefore had no right network also to can be described as a kind of special circumstances of weighting network.
For the relevant arbitrarily limit Jie's number on limit of having no right in the undirected Acyclic Network of how searching for as shown in Figure 1, the present invention has studied and has a kind ofly had no right more efficiently undirected Acyclic Network limit Jie and count searching algorithm.The basic thought of algorithm is as follows: adopt circulation to deposit successively in order all nodes of network and corresponding abutment points thereof in adjacency list with the data structure of adjacency list, then shortest path between all any two points that comprise this limit is searched on an optional limit successively from network, and record limit Jie's number on this limit, so circulation is until limit Jie's number on all limits is all obtained in the network.
Having no right the algorithm of undirected Acyclic Network figure mainly may further comprise the steps:
(1) sets up network chart according to node (parts) number of given object (engineering goods) and the relation (assembly restriction) between node.Design and Implement some rudimentary algorithms of network of relation, such as the storage of node and abutment points thereof, connecting relation expression etc.
(2) according to having no right the characteristics of undirected Acyclic Network, in order to reduce the search work amount, adopt recurrence and storehouse from appointment node a, and will specify node to be labeled as and access, then search for successively each abutment points b of starting point a, if the not accessed mistake of b then arrives b along this limit from a, access b and it is labeled as accessed, then begin search from b, until searched for all paths from b, just date back to node a, select again a limit of not seeking from a.Till said process is recycled to always and all sought from all limits of a.In this process, from a, whenever seek not accessed node, then limit Jie number adds 1, and is final, namely can obtain limit Jie's number on this limit.
(3) after the limit on the limit take a as starting point Jie's number search is complete, then search for a lower c take a as starting point, the limit Jie's number take the abutment points of c as the limit that terminal point consists of.
(4) repeating step (2) and (3) are until obtain limit Jie's number on all limits in the network.
The idiographic flow of algorithm as shown in Figure 2.Each alphabetical implication is as follows in the process flow diagram: a is the limit number that comprises in the current path, and b is initial node, and d is a upper node of current node, and ei is destination node, and min is the limit number that shortest path comprises in all paths between two nodes.
Module partition method and step based on the poly-characteristic of complex network limit Jie's manifold are as follows:
(1) the parts assembly restriction of extraction product;
(2) the parts assembly restriction network of structure product;
(3) limit Jie's number on each bar limit in the counting yield parts assembly relation network;
(4) remove the limit that limit Jie in the network counts maximum, network is divided into some sub-networks;
(5) each sub-network is repeated said process, until the all-ones subnet network that decomposes meets Module Division granularity (being E＜2).
In sum, based on the concrete block diagram of the module partition method of the poly-characteristic of complex network limit Jie's manifold and step as shown in Figure 3.
The present invention only does the one-level Module Division to planer-type milling machine, therefore will have obviously gather characteristic part group (parts) as a node, such as screw pair, main spindle box, feed box etc.For convenience of description and the calculating of follow-up limit Jie's number, originally save number designation and replace corresponding part and assembly as shown in table 1.Planer-type milling machine assembly restriction network chart as shown in Figure 4.
The part and assembly that table 1 number designation is corresponding
2, adopt supporting option interface algorithm that the interface between functional module is carried out standardization, and set up accordingly interface database; The possibility of the relation of cooperatively interacting between this interface database writing function module functional module associated with it and total interface Change of types.
In the preferred embodiment of the present invention, interface has: worktable and lathe bed; Lathe bed and column; Column and crossbeam; Column and back timber.
(1) worktable and lathe bed: slide rail, line rail and hydrostatic slideway, along with the different of guide rail form and basic principal parameter (machine power parameter in the basic length and width size of worktable and the basic input) thus select supporting interface, the inner structure that drives worktable and lathe bed according to parameterized model after the docking port type is selected is carried out modification.
Be 1.4 all to be slide rail when following when the width of worktable, when the width of worktable greater than 1.4, length less than 6 be slide rail, length greater than 6 meters be the line rail.The radical of line rail if length less than 8 meters then the line rail then use three with two greater than eight meters
What need to consider in addition, is motor interface part on the lathe bed: along with the worktable of selecting is different with lathe bed interface guide rail different structures and installation site can be arranged.
(2) lathe bed and column: lathe bed column module interface is along with the basic size of the position on the lathe bed that do not coexist of size and interface also can change, so it is to carry out series with the lathe bed size to distribute substantially.
(3) column and crossbeam interface: be the slide rail motion, the main spindle box slide equally is that enterprises is standardized with main spindle box, so the width of guide rail and the span between the guide rail all are standardized.Can be defined as constant size.
(4) column and back timber interface: the interface of column and back timber is mainly determined according to basic size and the citation form of column.
3, set up the Variant Design storehouse of all parts of each functional module inside;
3.1, the parameters of all parts is classified, a class is changeless invariant parameter, a class is the basic parameter that changes according to customer requirements, a class is to change the derived parameter that respective change occurs with basic parameter and/or interface type;
3.2, the parameter value of each invariant parameter parts is stored;
3.3, the parameter value of each basic parameter parts is reserved, follow-uply manually input by customer requirements;
3.4, each derived parameter parts is stored with the functional relation that the basic parameter parts change.
In all parts of the preferred embodiment of the present invention,
(1) basic parameter:
1. machine power m_gonglv (set a scope, motor is chosen in segmentation)
Input parameter m_gonglv (this serial lathe has the range of work 0-al of three power to select a1, and a1-a2 selects a2, and a2-a3 selects a3): the if (m_gonglv=al of m_gonglv＜a1); If (the m_gonglv=a2 of a1＜m_gonglv＜a2); If (the m_gonglv=a3 of a2＜m_gonglv＜a3); )
2. accessory size: part length v_LJChangDu part width v_LJKuanDu part height v_LJGaoDu
Input parameter: part length v_LJChangDu part width v_LJKuanDu part height v_LJGaoDu
3. the number of time processing face: main tapping number m_ZhuZhouTouShu (1 or 2 of end face, end face adds side 2/3/4)
The selection number of main tapping that the number of time processing face is directly corresponding, so it can be set to select size m_ZhuZhouTouShu=1/2/3/4
(2) derived parameter:
1. determine the value of worktable length parameter v_GZTChangDu and worktable width v_GZTKuanDu according to accessory size part length v_LJChangDu and part width v_LJKuanDu;
v_GZTChangDu=A1*v_LJChangDu+B1
v_GZTKuanDu=A2*v_LJKuanDu+B2
2. determine the parameter value of the base altitude size column height v_LZGaoDu of column according to accessory size part height v_LJGaoDu;
v_LZGaoDu=A3*v_LJGaoDu+B3
3. determine lathe bed parameters of basic dimensions lathe bed length v_CSChangDu lathe bed width v_CSKuanDu lathe bed height v_CSGaoDu according to the basic size of worktable module
v_CSChangDu=A4*v_GZTChangDu+B4=A4*(A1*v_LJChangDu+B1)+B4
v_CSKuanDu=A5*v_GZTChangDu+B5=A5*(A2*v_LJKuanDu+B2)+B5
v_CSGaoDu=C1*v_CSChangDu+C2*v_CSKuanDu=C1*A4*(A1*v_LJChangDu+B1)+B4+C2*A5*(A2*v_LJKuanDu+B2)+B5
4. determine the basic stride sizes column span v_LZKuaJu crossbeam span v_HLKuaJu back timber span v_DLKuaJu of crossbeam and back timber according to the basic size of worktable module
v_HLKuaJu=v_DLKuaJu=v_CSKuanDu+B6
So far some basic calculating principal parameters of each functional module are determined.
Variant Design is to realize a kind of important method of Product rapid design.At present, although the research to Variant Design has obtained many achievements, but these researchs are mainly for product geometric model modification, then relate to less for the satisfying property of Engineering constraint condition (such as reliability of stiffness and strength and product etc.), yet the satisfying property of Engineering constraint condition has directly determined the Performance and quality of product in application layer.In the research in the past, mainly be by certain data structure and optimization process algorithm Engineering constraint to be mapped to the geometrical-restriction relation formula in earlier stage in modeling, at last relational expression found the solution that this process can be defined as the Engineering constraint modeling.And along with product is tending towards complicated, may find the solution hardly the satisfying property of Engineering constraint condition according to the method for Engineering constraint modeling, perhaps can not provide quantitatively relevant satisfying property evaluation result in the situation qualitatively.This method is intended to seek the Accounting Problems that a kind of universal method that satisfies the Engineering constraint condition with complex product Variant Design coupling solves Engineering constraint.This method mainly concentrates on being studied based on the integrated variant design method of parameterized CAD/CAE, and based on the method a kind of variant design method that satisfies the Engineering constraint condition has been proposed, take the seriation planer-type milling machine as example, select rigidity, intensity class Engineering constraint condition, developed the Variant Design prototype system that satisfies the Engineering constraint condition, said method has been verified.Specific implementation flow process of the present invention as shown in Figure 5.
4, above-mentioned functions module library, interface database and Variant Design storehouse are carried out the three-dimensional model that compositional modeling obtains lathe under software environment.Referring to Fig. 6.In the preferred embodiment of the present invention, the software environment of described realization modeling is Soldworks software.
5, the three-dimensional model after the modeling is carried out simulation analysis, obtaining structural stress, thermal stress, distortion and the mode value of analog simulation, and will above-mentioned each value and the structural stress, thermal stress, distortion and the mode value that specifically obtain under the applied environment compare; When each parameter value of analog simulation when each parameter value under the concrete applied environment conforms to, with the three-dimensional model output of setting up; When each parameter value of analog simulation when each parameter value under the concrete applied environment does not conform to, defective parameter value is derived the foundation of adjusting as follow-up Variant Design storehouse.
Claims (3)
1. based on modular machine tool design method, it is characterized in that comprising the steps:
(1) according to function, design feature and process and assemble condition, adopts limit Jie to count searching algorithm given lathe is carried out Module Division, and set up accordingly function modules ground;
(1.1) provide inner all parts of given lathe assembly restriction formula each other;
(1.2) set up the assembly relation network according to component number and the assembly restriction between above-mentioned parts of given lathe;
(1.3) limit Jie's number on each bar limit in the assembly relation network of the given machine tool element of calculating;
(1.4) remove the limit that limit Jie in the network counts maximum, network is divided into some sub-networks;
(1.5) to each sub-network double counting limit Jie's number with remove the process that limit Jie in the network counts the limit of maximum, until the all-ones subnet network that decomposes meets the Module Division granularity of setting, this moment, the gained sub-network was the functional module that marks off;
(1.6) set up function modules ground according to the functional module that marks off, this function modules ground records the parts that each functional module comprises;
(2) adopt supporting option interface algorithm that the interface between functional module is carried out standardization, and set up accordingly interface database; The possibility of the relation of cooperatively interacting between this interface database writing function module functional module associated with it and total interface Change of types;
(3) set up the Variant Design storehouse of all parts of each functional module inside;
(3.1) parameters of all parts is classified, a class is changeless invariant parameter, and a class is the basic parameter that changes according to customer requirements, and a class is to change the derived parameter that respective change occurs with basic parameter and/or interface type;
(3.2) parameter value of each invariant parameter parts is stored;
(3.3) parameter value of each basic parameter parts is reserved, follow-uply manually inputted by customer requirements;
(3.4) each derived parameter parts is stored with the functional relation that the basic parameter parts change;
(4) above-mentioned functions module library, interface database and Variant Design storehouse are carried out the three-dimensional model that compositional modeling obtains lathe under software environment.
2. according to claim 1 based on modular machine tool design method, it is characterized in that described step (4) also further comprises afterwards carries out simulation analysis to the three-dimensional model after the modeling, obtaining structural stress, thermal stress, distortion and the mode value of analog simulation, and will above-mentioned each value and the structural stress, thermal stress, distortion and the mode value that specifically obtain under the applied environment compare; When each parameter value of analog simulation when each parameter value under the concrete applied environment conforms to, with the three-dimensional model output of setting up; When each parameter value of analog simulation when each parameter value under the concrete applied environment does not conform to, defective parameter value is derived the foundation of adjusting as follow-up Variant Design storehouse.
3. according to claim 1 based on modular machine tool design method, it is characterized in that: when step (1.3) to having no right undirected Acyclic Network when carrying out the search of limit Jie's number, its process is to adopt circulation to deposit successively in order all nodes of network and corresponding abutment points thereof in adjacency list with the data structure of adjacency list, then shortest path between all any two points that comprise this limit is searched on an optional limit successively from network, and record limit Jie's number on this limit, so circulation is until limit Jie's number on all limits is all obtained in the network.
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| CN103294810A (en) * | 2013-05-31 | 2013-09-11 | 天津大学 | Quick-tool-design-oriented fixed joint surface database and creating method thereof |
| CN103294808A (en) * | 2013-05-31 | 2013-09-11 | 沈机集团昆明机床股份有限公司 | Screw nut database building method supporting machine tool fast design and assembling |
| CN103294806A (en) * | 2013-05-31 | 2013-09-11 | 沈机集团昆明机床股份有限公司 | Guide rail slider database building method supporting machine tool fast design and assembling |
| CN103294808B (en) * | 2013-05-31 | 2016-03-16 | 沈机集团昆明机床股份有限公司 | A kind of feed screw nut database building method supporting machine tool fast design and assembling |
| CN103294810B (en) * | 2013-05-31 | 2016-04-06 | 天津大学 | A kind of fixed combinating surface database towards machine tool fast design and method for building up thereof |
| CN103294806B (en) * | 2013-05-31 | 2016-06-22 | 沈机集团昆明机床股份有限公司 | A kind of guide rail slide block database building method supporting machine tool fast design and assembling |
| CN105653809A (en) * | 2016-01-07 | 2016-06-08 | 河海大学常州校区 | Green module partitioning method based on product functions |
| CN105718629A (en) * | 2016-01-08 | 2016-06-29 | 桂林电子科技大学 | Variant design method of meeting engineering constraint conditions |
| CN107169169A (en) * | 2017-04-20 | 2017-09-15 | 上海交通大学 | The Simulation Methods of soft aircraft mechanical manipulation system |
| CN107169169B (en) * | 2017-04-20 | 2020-05-05 | 上海交通大学 | Simulation implementation method of mechanical control system of soft airplane |
| CN109325280A (en) * | 2018-09-13 | 2019-02-12 | 广西科技大学 | A kind of inertia test table module partition method |
| CN113127977A (en) * | 2021-04-23 | 2021-07-16 | 沈阳德瓦特汽轮动力有限责任公司 | Method for combined design of outer cylinder wood mold of industrial steam turbine |
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