CN103279614B - A kind of machine tool structure large rib plate layout and method for designing - Google Patents
A kind of machine tool structure large rib plate layout and method for designing Download PDFInfo
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Abstract
A kind of machine tool structure large rib plate layout and method for designing, for supporting with gusset topology data storehouse, carry out the design of main muscle, auxiliary muscle and lightening hole successively, form machine tool structure large gusset design proposal of complete set, comprise: after machine tool structure part profile and size design complete, according to bars position and significance level, the design of large for machine tool structure gusset is divided into and sets up gusset topology data storehouse, main gusset layout and design, auxiliary rib plate layout and design and lightening hole layout and design and four parts.That is, gusset topology data storehouse is set up; Main gusset layout and design; Auxiliary rib plate layout and design; Lightening hole layout and design.The invention provides machine tool structure large gusset design proposal of complete set, avoid the problem that unclear, the major-minor structure of sequencing in gusset design process is chaotic, positioning efficiency is low, improve design efficiency and the quality of the inner gusset of machine tool structure part.
Description
Technical field
The present invention relates to the large piece optimization method for designing of a kind of machine tool structure, particularly relate to a kind of machine tool structure large rib plate layout and method for designing.
Background technology
In Machine Tool design process, the arrangement form of structure large inner gusset is larger on the overall performance impact of lathe.Reinforcing plate structure has lightweight, that bearing capacity is high, bending resistance is strong feature, can play the effect of support, protection, can reduce the overall weight of lathe, improve the rigidity of Big Part in Machine Tool.
Due to the complicacy that gusset is arranged, analysis theories also imperfect at present and ripe computing method, in the design process, designer is mainly based on 3 d modeling software, use experience method and analogy method carry out Interactive Design, cause that gusset repetitive operation amount is large, design efficiency is low, poor stability.Therefore, for improving efficiency and the quality of rib plate layout design, setting up a kind of machine tool structure large rib plate layout and method for designing, the rapid Design of lathe is had great significance.
Summary of the invention
Technical matters to be solved by this invention is, provides a kind of and can improve the inner design efficiency of gusset of machine tool structure part and machine tool structure large rib plate layout of quality and method for designing.
The technical solution adopted in the present invention is: a kind of machine tool structure large rib plate layout and method for designing, for supporting with gusset topology data storehouse, carry out the design of main muscle, auxiliary muscle and lightening hole successively, form machine tool structure large gusset design proposal of complete set, comprise: after machine tool structure part profile and size design complete, according to bars position and significance level, the design of large for machine tool structure gusset is divided into and sets up gusset topology data storehouse, main gusset layout and design, auxiliary rib plate layout and design and lightening hole layout and design and four parts.
Comprise the steps:
1) gusset topology data storehouse is set up
Comprise rib plate layout knowledge, gusset type selecting knowledge, reinforcing plate structure parameter and gusset meta structure model bank, lightening hole layout, lightening hole structural parameters, for major-minor gusset and lightening hole topological design provide support.
2) main gusset layout and design
First machine tool structure large forced position is found out, in machine tool structure large middle leading screw and these easy positions producing distortion of guide rails assembling position, horizontal main stress Support Position and longitudinal main stress Support Position, be machine tool structure large crucial forced position, first carry out main load-bearing rib plate layout and the design at these positions;
Easily produce the geomery of the position key position of distortion according to described leading screw and guide rail, in conjunction with Machine Tool Structures, in the gusset topology data storehouse set up from step 1), select corresponding or close gusset with it to carry out main load-bearing gusset topological design;
3) auxiliary rib plate layout and design
After main gusset layout completes, structural member inner space by outer wall and main load-bearing gusset be divided into differ in size, several spaces that shape is indefinite, auxiliary rib plate layout and different several space structures of design consideration select corresponding placement policies from gusset topology data storehouse, carry out the layout of gusset; Then, from gusset topology data storehouse, select the meta structure be suitable for according to layout result, and call described meta structure driving parameter, set up the parameterized model of auxiliary gusset;
4) lightening hole layout and design
After gusset has been arranged, carry out the design of lightening hole on gusset, the design of lightening hole comprises lightening hole location layout, the design of lightening hole cross sectional shape, size.
Rib plate layout knowledge described in step 1) comprises main muscle arrangement principle, meta structure layout knowledge and constraint; Described gusset type selecting knowledge comprises dynamic perfromance, static characteristics, manufacturability constraint; Described reinforcing plate structure parameter comprises topology numbering, structural parameters; Described gusset meta structure model bank comprises cross muscle, rice font muscle, positive square muscle, honeycomb type muscle.
Step 2) described in the detail parameters of carrying out topological design comprise: gusset topological structure type selecting, gusset cross sectional shape size type selecting and design.
The requirement of lightening hole layout and design in step 4) is: should ensure machine tool structure large loss of weight ratio and mass distribution, ensures structure large Static and dynamic stiffness drop-out value in allowed limits again.
A kind of machine tool structure of the present invention large rib plate layout and method for designing, provide machine tool structure large gusset design proposal of complete set, avoid the problem that unclear, the major-minor structure of sequencing in gusset design process is chaotic, positioning efficiency is low, improve design efficiency and the quality of the inner gusset of machine tool structure part.The advantage that the present invention has and good effect are:
1) by large for machine tool structure inner gusset design is divided into main muscle, auxiliary muscle and lightening hole three part, design respectively, effectively prevent in gusset design process and design the problem that unclear, the major-minor structure of sequencing is chaotic, positioning efficiency is low, improve design efficiency and the quality of the inner gusset of structural member;
2) first arrange main load-bearing gusset at key position and weak link, ensure that the distortion of machine tool structure part critical positions is less, improve the reliability of design result;
3), when arranging auxiliary gusset, application gusset placement policies, reinforcing plate structure type selecting and parametric modeling method, realize the high-effect high-quality design of auxiliary muscle;
4) establish gusset topology data storehouse, the experimental knowledge that gusset designs is integrated in database, for the design of machine tool structure part gusset provides support.
Accompanying drawing explanation
Fig. 1 is machine tool structure large rib plate layout and project organization schematic diagram;
Fig. 2 is machine pillar rib plate layout and design flow diagram;
Fig. 3 a is machine pillar main gusset topological design sectional view;
Fig. 3 b is that machine pillar assists gusset topological design sectional view;
Fig. 3 c is machine pillar lightening hole topological design sectional view.
In figure
1: lead screw shaft bearing installed surface 2: laterally logical muscle
3: upper/lower guide installed surface 4: laterally logical muscle
5: longitudinally strengthen logical muscle 6: auxiliary gusset
7: lightening hole 8: perpendicular muscle
Embodiment
Below in conjunction with embodiment and accompanying drawing, a kind of machine tool structure of the present invention large rib plate layout and method for designing are described in detail.
As shown in Figure 1, a kind of machine tool structure of the present invention large rib plate layout and method for designing, for supporting with gusset topology data storehouse, carry out the design of main muscle, auxiliary muscle and lightening hole successively, form machine tool structure large gusset design proposal of complete set, comprise: after machine tool structure part profile and size design complete, according to bars position and significance level, large for machine tool structure gusset design is divided into and sets up gusset topology data storehouse, main gusset layout and design, auxiliary rib plate layout and design and lightening hole layout and design four parts.
A kind of machine tool structure of the present invention large rib plate layout and method for designing, comprise the steps:
1) gusset topology data storehouse is set up
Gusset topology data storehouse is model bank and the knowledge base of bearing rib topological design, namely rib plate layout and type selecting knowledge base are provided, comprise rib plate layout knowledge, gusset type selecting knowledge, reinforcing plate structure parameter and gusset meta structure model bank, lightening hole layout, lightening hole structural parameters etc., for major-minor gusset and lightening hole topological design provide support.
Described rib plate layout knowledge comprises main muscle arrangement principle, meta structure layout knowledge and constraint; Described gusset type selecting knowledge comprises dynamic perfromance, static characteristics, manufacturability constraint etc.; Described reinforcing plate structure parameter comprises topology numbering, structural parameters; Described gusset meta structure model bank comprises cross muscle, rice font muscle, positive square muscle, honeycomb type muscle.
2) main gusset layout and design
First machine tool structure large forced position is found out, in machine tool structure large middle leading screw and guide rails assembling position, horizontal main stress Support Position and longitudinal main stress Support Position etc., these easily produce the position of distortion, be machine tool structure large crucial forced position, first carry out main load-bearing rib plate layout and the design at these positions;
Easily produce the geomery of the position key position of distortion according to described leading screw and guide rail, in conjunction with Machine Tool Structures, in the gusset topology data storehouse set up from step 1), select corresponding or close gusset with it to carry out main load-bearing gusset topological design;
The described detail parameters of carrying out topological design comprises: gusset topological structure type selecting, gusset cross sectional shape size type selecting and design etc.
3) auxiliary rib plate layout and design
After main gusset layout completes, structural member inner space by outer wall and main load-bearing gusset be divided into differ in size, several spaces that shape is indefinite, auxiliary rib plate layout and different several space structures (shape of each remaining space and size) of design consideration select corresponding placement policies from gusset topology data storehouse, carry out the layout of gusset; Then, from gusset topology data storehouse, select the meta structure be suitable for according to layout result, and call described meta structure driving parameter, set up the parameterized model of auxiliary gusset, Design assistant bearing rib, play supporting structure, improve the effect of bearing capacity;
4) lightening hole layout and design
After gusset has been arranged, the quality of structural member may exceed permissible value or mass distribution is undesirable, therefore will carry out the design of lightening hole on gusset, and the design of lightening hole comprises lightening hole location layout, the design etc. of lightening hole cross sectional shape, size.
The requirement of lightening hole layout and design is: should ensure machine tool structure large loss of weight ratio and mass distribution, ensures structure large Static and dynamic stiffness drop-out value in allowed limits again.
Provide an example below in conjunction with Fig. 2 and a kind of machine tool structure of the present invention large rib plate layout and method for designing are described.
First set up gusset topology data storehouse as shown in the right side of fig 2, comprising: rib plate layout knowledge base, gusset type selecting knowledge base, gusset meta structure model bank, lightening hole layout knowledge base and lightening hole structural model storehouse.Then following steps are carried out:
The first step: column profile outline model modeling
According to Machine Tool design requirement, determine its outline parameter, set up the profile outline model of column, comprising: physical dimension, leading screw/guide rails assembling position etc.
Second step: main bar upright column plate layout and design
Referring to figs. 2 and 3 a, first, based on column profile outline model, determine the main load-bearing position such as particular location and geomery, horizontal and vertical main stress Support Position etc. in lead screw shaft bearing installed surface and guide rails assembling face, corresponding rib plate layout strategy is selected: (1) up and down each transverse direction of lead screw shaft bearing installed surface 1 leads to muscle 2 from rib plate layout knowledge base, (2) each transverse direction of upper/lower guide installed surface 3 leads to muscle 4, (3) logical muscle 5 longitudinally strengthened by inner one of column, the inner each perpendicular muscle 8 of (4) left and right sidesing pillar.Horizontal logical muscle 2, the laterally logical muscle 5 of logical muscle 4, longitudinally reinforcement and perpendicular muscle 8 are referred to as main gusset.
Then, from gusset type selecting knowledge base, select the reinforcing plate structure mated with layout: the transverse direction that (1) lead screw shaft bearing installed surface is arranged leads to the thick 20mm of muscle 2, (2) guide rails assembling face is the logical thick 20mm of muscle 4 laterally, and (3) column is inner longitudinally strengthens the logical thick 25mm of muscle 5.
Finally, by finite element analysis software, carry out simulation analysis, and suitably revise for design result main gusset layout result, as layout regulation structure, amendment gusset sectional dimension and thickness, to reach, column distortion is minimum, Static and dynamic stiffness performance is best.
3rd step: auxiliary rib plate layout and design
Referring to figs. 2 and 3 b, first, based on main bar upright column plate layout result, layout and the design of auxiliary gusset is carried out.Corresponding rib plate layout strategy, gusset type selecting and meta structure is selected to select from rib plate layout knowledge base: the shape of the remaining space that (1) is partitioned into according to main gusset and size, uniform auxiliary gusset 6, spacing is 260mm, (2) gusset thickness adopts equal thickness method, thickness is 20mm, and (3) meta structure is selected cross.
Then, call gusset and drive parameter, carry out the parametric modeling of auxiliary gusset, complete layout and the design of auxiliary gusset.
Finally, by finite element analysis software, simulation analysis is carried out to auxiliary gusset layout result, and suitably revises for design result, as layout regulation strategy, amendment gusset sectional dimension and thickness and meta structure type selecting etc., to reach, column distortion is minimum, Static and dynamic stiffness performance is best.
4th step: lightening hole layout and design, referring to figs. 2 and 3 c, first, assists gusset layout result for foundation with column, in conjunction with column weight and mass distribution requirement, carries out layout and the design of lightening hole.
(1) after gusset has been arranged, column weight and mass distribution are analyzed, and find column actual weight and theoretical weight difference and particle and theoretical particle postition difference; (2) on this basis, select suitable lightening hole placement strategy from lightening hole layout knowledge base: adopt double lightening hole, crossbeam and left and right sidesing pillar are arranged simultaneously, and arrangement is; Often arrange 5, be uniformly distributed to both sides with symcenter; Meanwhile, left and right sidesing pillar adopts four square up/down perforation lightening holes, and its arrangement mode is sphere of movements for the elephants type; (3) carry out lightening hole structural design in conjunction with lightening hole structural model storehouse: it is 150mm that rear side one arranges lightening hole diameter, last row's lightening hole diameter is 120mm; Lightening hole each little square length of side in left and right sidesing pillar place is 260mm.
Ensure that column mass distribution meets the requirements by lightening hole layout and structural design, and Static and dynamic stiffness change is in allowed band.
Although be described the preferred embodiments of the present invention by reference to the accompanying drawings above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, can also make a lot of form, these all belong within protection scope of the present invention.
Claims (4)
1. a machine tool structure large rib plate layout and method for designing, it is characterized in that, for supporting with gusset topology data storehouse, carry out the design of main muscle, auxiliary muscle and lightening hole successively, form machine tool structure large gusset design proposal of complete set, comprise: after machine tool structure part profile and size design complete, according to bars position and significance level, the design of large for machine tool structure gusset is divided into and sets up gusset topology data storehouse, main gusset layout and design, auxiliary rib plate layout and design and lightening hole layout and design and four parts, specifically comprise the steps:
1) gusset topology data storehouse is set up
Comprise rib plate layout knowledge, gusset type selecting knowledge, reinforcing plate structure parameter and gusset meta structure model bank, lightening hole layout, lightening hole structural parameters, for major-minor gusset and lightening hole topological design provide support;
2) main gusset layout and design
First machine tool structure large forced position is found out, in machine tool structure large middle leading screw and these easy positions producing distortion of guide rails assembling position, horizontal main stress Support Position and longitudinal main stress Support Position, be machine tool structure large crucial forced position, first carry out main load-bearing rib plate layout and the design at these positions;
Easily produce the geomery of the position key position of distortion according to described leading screw and guide rail, in conjunction with Machine Tool Structures, in the gusset topology data storehouse set up from step 1), select gusset corresponding with it to carry out main load-bearing gusset topological design;
3) auxiliary rib plate layout and design
After main gusset layout completes, structural member inner space by outer wall and main load-bearing gusset be divided into differ in size, several spaces that shape is indefinite, auxiliary rib plate layout and different several space structures of design consideration select corresponding placement policies from gusset topology data storehouse, carry out the layout of gusset; Then, from gusset topology data storehouse, select the meta structure be suitable for according to layout result, and call described meta structure driving parameter, set up the parameterized model of auxiliary gusset;
4) lightening hole layout and design
After gusset has been arranged, carry out the design of lightening hole on gusset, the design of lightening hole comprises lightening hole location layout, the design of lightening hole cross sectional shape, size.
2. a kind of machine tool structure according to claim 1 large rib plate layout and method for designing, is characterized in that, the rib plate layout knowledge described in step 1) comprises main muscle arrangement principle, meta structure layout knowledge and constraint; Described gusset type selecting knowledge comprises dynamic perfromance, static characteristics, manufacturability constraint; Described reinforcing plate structure parameter comprises topology numbering, structural parameters; Described gusset meta structure model bank comprises cross muscle, rice font muscle, positive square muscle, honeycomb type muscle.
3. a kind of machine tool structure according to claim 1 large rib plate layout and method for designing, is characterized in that, step 2) in carry out topological design detail parameters comprise: gusset topological structure type selecting, gusset cross sectional shape size type selecting and design.
4. a kind of machine tool structure according to claim 1 large rib plate layout and method for designing, it is characterized in that, the requirement of lightening hole layout and design in step 4) is: should ensure machine tool structure large loss of weight ratio and mass distribution, ensures structure large Static and dynamic stiffness drop-out value in allowed limits again.
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| 基于广义模块化设计的机械结构静、动态特性分析及优化设计;张学玲;《中国博士学位论文全文数据库 工程科技Ⅱ辑》;20050715(第3期);第C029-5页 * |
| 基于拓扑优化的机床立柱筋板改进;饶柳生 等;《机械设计与研究》;20100228;第26卷(第1期);第87-92页 * |
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