木工平刨床振动故障诊断

通过对振动过大的ＭＢ５０Ａ木工平蚀档的振动测量和频谱分析认为，引起该机床振动故障的原因主要是刀轴支承损坏和刀轴平衡，尤其是对于高速旋转的刀轴，即使不平衡量较小，也会对平刨床的振动产生较大的影响，这为木工平刨床的振动故障诊断、维修和使用提供了参考。     

木工平刨床噪声产生机理分析与控制

通过对MB503型木工平刨床进行试验模态和空气动力学的分析，确定了木工平刨床的主要噪声源，并进行了实验验证。运用机械噪声控制的基本原理提出了减振降噪措施，试验证明，采用这些减振降噪措施后，木工平刨床的空转噪声有了显著下降。     

四面木工刨床身振动特性分析

四面木工刨床是木材加工行业中应用较广泛的精加工机床,其加工精度的好坏,直接关系到我国木材资源能否合理利用。床身是木工四面刨床的重要组成部分,其工作中的振动影响刨床进料梁、压紧系统等的工作,从而关系到加工工件的精度。本文通过对四面木工刨床床身的振动测试,为相关技术人员提供参考。     

四面木工刨床床身振动特性分析

四面木工刨床是木材加工行业中应用较广泛的精加工机床，其加工精度的好坏，直接关系到我国木材资源能否合理利用.床身是木工四面刨床的重要组成部分，其工作中的振动影响刨床进料梁、压紧系统等的工作，从而关系到加工工件的精度.本文通过对四面木工刨床床身的振动测试，为相关技术人员提供参考.     

木工压刨床空运转振动状态的研究

木工压刨床空运转振动状态的研究李志仁，陈守谦，姜新波（东北林业大学哈尔滨１５００４０）关键词木工压刨床，振动状态，自功率谱，机内振源，刚度，动态设计木工压刨床是木材机械加工中使用数量最多，应用范围最广泛的一类机械设备，它不仅用于林业生产，而且在建筑、...     

木工平刨床噪声控制

论述了噪声控制的基本途径，分析了木工平刨床切削空转时的噪声源，提出了各种主动降噪措施和被动降噪措施。试验证明，采用这些降噪措施后，平刨床整机的噪声有显著的下降。     

专利信息

斜口木工平刨床本实用新型是一种斜口木工平刨床。它包括机身、前工作台、后工作台、刨削装置和供木料导向的挡板,刨削装置包括一位于前、后工作台之间的刨头,刨头通过刨头座安装在机身上,且刨头与挡板斜交。该机结构简单合理,刨刀对木料进行倾斜切削,切削平稳,加工精度高,操作     

浅谈木工平刨床导板机构设计

浅谈木工平刨床导板机构设计（２２４２４７）东台市家具机械厂王均东木工平刨床在加工木制品中应用较为广泛。其中寻板机构的作用是为刨木裁口及９０°～１３５°刨削基准的导向之用．在通常设计中，调整角度的结构一般既复杂又繁锁，而导板移动又不便于简化操作．为此，...     

单面木工压刨床空载功率的检测分析

通过对金华市瑞隆木工机械厂等厂家生产的9台MB104D单面木工压刨床空载功率的实测,得到了单面木工压刨床空载功率占额定功率的比值,并对该类机床产生空载功率的原因进行了分析。这些研究为设计者提供了确定单面木工压刨床空载功率的可靠数据,同时也为今后制定相关标准提供了理论依据,有利于木工机床的节能降耗。     

木工刨床的空转噪声及对人与环境的影响

本文从人一机一环境系统角度出发，以ＭＢ１０６Ａ型木工压刨床为例，通过对其空转噪声及机床操作者心率的实测，系统地研究了木工压刨床本身一些因素对木工压刨床空转噪声的影响；同时也研究了机床空转噪声与传播距离的关系；最后研究了木工压刨床噪声对机床操作者心率的影响。同时分析了噪声产生的机理，并进行了试验论证，最后建立了木工压刨床空转噪声的数学模型，从而为木工机床的研究与设计及人一机一环境系统工程的研究提供了依据。     

装修木制品的部件化生产

主要论述了装修木制品的部件化生产的理论基础、内容和技术路线,并提出了促进部件化生产的几点措施。     

Schädliche Insekten auf Schiffen

Summary Insects can be imported by ships in ballast, cargoes, woodwork and residues of former shipments in corners and clefts. There are given examples for noxious insects on cargoes. Termites, perhaps Cryptotermes sp. have destroyed harmonicas being transported from Germany to South Africa. The winged adults of Cryptotermes brevis (Walker) swarmed out of woodwork of cabin for wireless telegraphy on a Westindian steamer arriving the port of Hamburg June 1966. On the voyage to Chile Tribolium castaneum (Herbst) could attack soup meal made in Germany by Solenopsis geminata F. biting through the metallic foil of multiwall bags. Young larves of Dermestes maculatus Deg. gnawed at goats skin of native drums from Mombassa. The infection of copra by Periplaneta americana L. is discused and a case of butterfly itch by Hylesia canitia Stoll reported.      

基于OpenGL的微米长纤维模压汽车构件三维仿真

介绍了用VC 开发微米长木纤维模压异型车用木制品三维仿真系统的开发过程,探讨对3DS模型文件进行分析提取的方法,提出在OpenGL环境中根据分析提取得到的模型数据对微米长纤维模压汽车构件进行模拟仿真的方法.     

木材流通与木材产业链（一）

整个木材市场是一个完整的产业链,由资源、流通和需求构成。资源是源头,流通是桥梁,需求是动力,需求决定了资源寻求的方向,也决定了木材流通的目标。随着全球经济一体化,我国木制品工业快速发展,进口木材、出口木制品,我国已成为国际木材市场产业链的加工环节。无论资源还是需求,国内和国际已形成两大市场。木材产业链是互相依存,彼此影响,共同发展的一个整体。     

Technological heterogeneity of adhesive bonds in wood joints

 Gluing of wood is among the most effective methods for the permanent joining of furniture elements or building woodwork manufactured from wood. Technological errors occurring during the preparation process of the glue material may lead to variations in the strength of adhesive/wood joints. The purpose of the described research project was to investigate the effect of the heterogeneity of the glue bond on the distribution of tangential stresses in furniture joints, especially the effect of gas cavities, faulty glue bonds and glue outflows on the distribution of tangential stresses in adhesive bonded overlap, cross and angle wood joints. Using developed numerical models, it was shown that shear stresses in bonds of cross and angle joints reach their maximum values in corners of joints. The torsion center of cross joints is situated in the geometrical center of the bond, while in angle joints – it is found half-way through the length of one of the perpendicular edges of the joint. It was also proven that gas cavities present in the glue bond contribute to increased stresses in the neighbourhood of the source of heterogeneity. This phenomenon initiates a process of de-cohesion and, hence, reduces the overall strength of the joint. Faulty gluing, similar to gas cavities, constitutes a potential source of stress-breaking processes and reduces the strength of joints. On the other hand, glue outflows present in wood bonds increase their strength by expanding the initiation threshold of fractures even in situations where technological heterogeneity of the glue bond occurs. In furniture constructions as well as in large-size building woodwork constructions or, wherever grace and elegance of the finished product is of lesser importance, glue outflows can be treated as a positive and desirable phenomenon. Received 13 March 1999     

带锯机锯轮转速、锯条摆动与锯解精度的试验研究

基于对木工带锯机加工特性的研究需要,本文在MJ397型高速木工带锯机的锯条张紧力和进给速度恒定的情况下,通过实测锯机工作台和锯条结构系统的固有频率、同条件下锯割杉木试材时的锯条横向摆动量、变频器调节锯轮转速和锯材表面粗糙度等,分析锯轮转速、锯条横向摆动量与锯解精度的关系,为优化国产带锯机锯割稳定性等设计工作提供依据.     

榛子遗传改良研究进展

榛子原产我国,为榛科Corylaceae榛属Corylus植物．榛属在世界约有20种,分布于亚洲、欧洲及北美洲;我国原产8种2变种,分布于东北、华北、西北及西南地区．榛子是果材兼用的优良树种,是四大坚果(榛子、核桃、扁桃、硬果)之一,能生产上等的坚果和以其种仁为原料的高档食品、饮料等;也可以生产十分珍贵的木材,其木材坚硬,纹理、色泽美观,可做小型细木工的材料;部分品种可作植被恢复及园林绿化树种．本文中,较为系统地介绍了国内外榛子的种类及分布;良种选育及遗传多样性的研究,针对榛子遗传改良存在的问题提出相应的对策．     

密胺包覆环氧树脂微胶囊的制备及对木器水性涂层性能的影响

木器涂饰采用水性涂料可降低VOCs释放,同时也会导致木器易产生开裂缺陷,降低力学性能,可以利用自修复微胶囊技术进行修补。试验采用密胺为壁材、环氧树脂为芯材制备微胶囊,借助扫描电镜、红外光谱、光学性能、力学性能测试手段分析了不同含量微胶囊的水性面漆性能。试验结果表明:0.50芯壁比微胶囊颗粒大小更加均匀,表面更加光滑;微胶囊含量为4.0%的水性面漆成膜效果较好,光泽度、硬度、附着力、抗冲击强度性能较优。同时采用耐热性试验测试了漆膜对加热烘烤人为制造日常损伤的修复效果,试验发现伴随微胶囊含量的增加,样品的变色程度和光泽度变化差值随之减小,初步表明微胶囊有一定的修复效果。     

Influence of biotic factors on the mechanical properties of wood,taking into account the time of harvesting

The aim of the present paper is to investigate the influence of biotic factors (fungi and insects) on the mechanical properties of wood through the effect of blue-stain, taking into account the time of harvesting and the time of stay of wood in the forest. Specifically, the resistance to axial compression and to bending (modulus of rupture (MOR)) was studied using infected specimens of Scots Pine (Pinus sylvestris) and Norway Spruce (Picea abies) (the usual types of wood used in woodwork). The specimens were obtained from logs of Scots Pine and Norway Spruce that were harvested in three different seasons of year, namely in July 2012, November 2012 and June 2013, respectively, in the forest of Elatia-Greece, and the attack pace by biotic factors with respect to the time of logging was studied. The placement of the experimental surfaces of each type of tree was made on skid road and in the stand. Totally, 120 laboratory measurements in axial compression and 120 measurements in bending (MOR) took place. The results proved that blue-stain hardly affect the mechanical properties of both wooden species and particularly the specimens that were derived during the winter logging.     

模糊控制在发动机振动控制中的应用研究

将模糊控制理论引入电流变悬置发动机振动控制中,通过对发动机振动系统的简单建模,采用模糊控制策略对发动机振动进行研究,并应用Matlab对普通液压悬置和电流变液悬置发动机振动系统进行联合仿真建模。结果表明,电流变液悬置发动机采用模糊控制后比普通液压悬置隔振效果明显。