Research On The Design And Cutting Technology Of The Cutting Tool Device For The Primary Processing Of Bamboo Strips

Bamboo is widely used in construction,food,papermaking,furniture,gardening and other fields due to its short growth cycle,good material quality,and environmental protection.It has high economic and social value and is a good substitute for wood.The initial processing of bamboo strips refers to the processing stage in which the bamboo material is processed into specifications of bamboo strips through processes such as segmentation,bamboo breaking,and milling.The existing bamboo strips initial processing tools are backward,with low mechanization,high processing costs,high labor intensity and low processing efficiency.It is difficult to meet the demand for the production of modern high-quality bamboo processed products,which has seriously affected the development of the bamboo industry.At the same time,backward processing tools have also greatly increased the cost of bamboo processing and reduced the benefits of bamboo processing enterprises.At present,researchers are mostly engaged in the research of metal and wood processing tools,and there are few researches and reports on the initial processing tools of bamboo strips.In view of this,this article focuses on the design and cutting technology research of bamboo strips initial processing tool device,including bamboo segmentation tools and device design,bamboo breaking tools and device design,research and optimization of the influence of cutting parameters and tool types on bamboo milling performance,mainly completed The following content:Research on the effect of fixed-end cutting tools with different tooth numbers on the processing quality.At the same time,a device for bamboo automatic fixed-segment was developed;a new type of bamboo breaking tool and device were designed,focusing on solving the problem of bamboo breaking.The difficulty of bending bamboo in processing that affects the effect of breaking bamboo and the utilization rate of bamboo;the single factor test is used to study the milling performance of bamboo,considering the influence of different milling parameters and tool types on the surface roughness of bamboo milling,mainly for the bamboo milling process The spindle speed,feed rate,depth of cut,number of tool teeth and tool material are analyzed,and its influence on surface roughness is analyzed.According to the single-factor test results,the appropriate cutting tools are selected to optimize the cutting parameters of bamboo materials.Using the response surface method,the response of the bamboo milling parameters(spindle speed,feed rate,depth of cut)to the response(surface roughness)was studied.The corresponding mathematical model was established,the interaction of the pairwise milling parameters on the response was analyzed,and the bamboo milling process was optimized.On this basis,the combination of cutting speed,feed rate and depth of cut corresponding to the best milling process(minimum surface roughness and minimum cutting force)under the test conditions was determined and tested and verified to provide high-quality processing for bamboo milling Scientific basis.Research indicates:(1)Fixed-segment cutting tools with different numbers of teeth have an effect on the quality of bamboo fixed-end processing.A cutting tool with a larger number of teeth can get a better quality surface.The device of bamboo material automatic segmentation realizes the functions of bamboo strip automatic sawing and removal,bamboo joint automatic recognition and avoidance,and bamboo automatic sawing.It has completed the transformation from semi-automatic processing of bamboo material to automatic processing,with a high degree of mechanization and automation.It is verified by experiments that the quality of bamboo sawing is good,the bamboo joint avoidance rate is 100%,the average processing efficiency is about 10.16m/min,improve production efficiency by more than 27%,and the labor cost is reduced by more than50%,which meets the design requirements and is suitable for actual production needs.(2)The bamboo-breaking tool and device include a floating cutter head and 10 bamboobreaking knives,which further expand the processing range of bamboo materials.It adopts a gear-driven cutter head rotary tool change method and innovative floating bamboo-breaking method.The plate can be processed floating up and down with the curvature of the bamboo when the bamboo is broken,which can improve the quality of the broken bamboo and the utilization rate of the bamboo to a certain extent.(3)Cutting parameters have a certain degree of influence on the surface roughness of bamboo milling.At the same time,different cutter teeth and materials have a direct influence on the surface roughness of bamboo milling.The mathematical model of bamboo surface roughness and cutting force established is reasonable and reliable.At the same time,based on the optimization of response surface method,the bamboo cutting parameter combination with the best surface roughness and minimum cutting force is obtained.The test verification results are very good,and the prediction accuracy is high.It can predict and optimize the surface roughness and cutting force in the actual bamboo milling production process.This article has developed an automatic bamboo cutting tool and device,designed an automatic bamboo breaking tool and device,and carried out research on bamboo milling performance,which provides the possibility for bamboo material automatic fixed-segment processing,and theoretically solves it.Because the bending problem of bamboo material affects the effect and utilization of bamboo material,the research on bamboo milling performance provides theoretical guidance and scientific basis for bamboo milling processing.