JKM8318數(shù)控凸輪軸靠模磨床砂輪架設(shè)計

里面有詳細的圖紙，ppt，論文，外文翻譯

目錄

設(shè)計總體說明…………………………………………………………………………………………………...1
Design General Information…………………………  ………………………………………..………………2
1  前言 4
1.1 凸輪軸簡介 4
1.2 簡述凸輪軸數(shù)控磨床的產(chǎn)生和發(fā)展 4
1.3 論述設(shè)計凸輪軸磨床砂輪架的原因 5
1.4 本課題研究的內(nèi)容和方法 6
1.4.1研究內(nèi)容 6
1.4.2研究方法 6
2  JKM8318數(shù)控凸輪軸磨床簡介 7
2.1 機床的技術(shù)規(guī)格 7
2.2 機床部件 7
2.3 機械傳動系統(tǒng) 9
2.3.1 機械傳動系統(tǒng)結(jié)構(gòu) 9
2.3.2 砂輪架的傳動設(shè)計 11
2.4 液壓系統(tǒng) 11
2.4.1液壓系統(tǒng)組成 11
2.4.2液壓系統(tǒng)的功能： 11
3  砂輪架設(shè)計 13
3.1砂輪架簡介 13
3.2砂輪架電機的選擇 13
3.2.1磨削力的計算 14
3.2.2磨削功率的計算 15
3.2.3電動機功率的計算 15
3.3砂輪架主軸的設(shè)計 16
3.3.1主軸材料的選擇 16
3.3.2主軸的結(jié)構(gòu)設(shè)計 16
3.3.3主軸的強度校核計算 17
3.4主軸的剛度校核計算 20
3.4.1軸的扭轉(zhuǎn)剛度計算 20
3.4.2軸的彎曲剛度計算 20
3.5 液體的動靜壓軸承設(shè)計 21
3.5.1液體動靜壓軸承的概述 21
3.5.2 動靜壓軸承的結(jié)構(gòu)參數(shù)設(shè)計 23
4  砂輪架箱體設(shè)計 25
4.1箱體材料的選擇 25
4.2箱體設(shè)計 25
結(jié)束語 27
致謝 28
參考文獻 29
 
設(shè)計總說明

凸輪軸是發(fā)動機配氣機構(gòu)的一部分，專門負責(zé)驅(qū)動氣門按時開啟和關(guān)閉，作用是保證發(fā)動機在工作中定時為汽缸吸入新鮮的可燃混合氣，并及時將燃燒的廢氣排出氣缸。凸輪軸的加工精度較高，整個加工不可能在一個工序內(nèi)完成。為了利于逐步的達到加工要求，把整個工藝過程劃分為三個階段：粗加工——半精加工——精加工，以完成不同加工階段的目的和任務(wù)。在齒輪的加工中，最重要同時也是難度最大的是凸輪形面的加工。該形面的加工方法目前主要有車削和磨削兩種。凸輪軸的毛胚采用精鑄的方法得到，毛胚的精度較高，切削量少，故采用磨削的加工工藝，簡化了凸輪形面的加工。JKM8318數(shù)控凸輪軸磨床是根據(jù)目前市場需要，在原簡易數(shù)控、三座標凸輪軸磨床基礎(chǔ)上改進開發(fā)出來的高速、高效數(shù)控凸輪軸磨床。采用CBN砂輪磨削，砂輪線速80-120米/秒，有機地將靠模與數(shù)控，雙循環(huán)磨削和CBN砂輪強力磨削兩種先進的磨削方式綜合，加工效率遠遠高于普通凸輪磨床，1-2倍工作，穩(wěn)定性好，操作維護簡單，自動化程度較高，在國內(nèi)具有領(lǐng)先地位，本機床主要適用于汽車、摩托車、內(nèi)燃機的凸輪軸粗加工和半精磨加工。機床主要特點：采用德國西門子(SIEMENS)802Dsl或華中HNC210B數(shù)控系統(tǒng),控制工作臺移動、砂輪架進給、頭架主軸旋轉(zhuǎn)、和導(dǎo)輪移動。采用具有我公司自主知識產(chǎn)權(quán)的?？蛇x擇單CBN砂輪和雙CBN砂輪磨削。砂輪架導(dǎo)軌采用“靜壓卸荷”耐磨貼塑導(dǎo)軌。砂輪修整采用電主軸金剛石滾輪修整。JKM8318運用高速磨削技術(shù)，高速磨削與普通磨削相比具有突出的技術(shù)優(yōu)勢可大幅度提高磨削效率,減少設(shè)備使用臺數(shù)這大大提高了磨削效率，且明顯降低磨削力，提高了零件的加工精度?？梢悦黠@降低磨削力,提高零件的加工精度,能實現(xiàn)對硬脆材料(如工程陶瓷及光學(xué)玻璃等)。隨著高速磨削的應(yīng)用，對砂輪架的要求也越來越高。CBN高速內(nèi)置式電主軸砂輪架得到了運用。砂輪架中的高速主軸的具有很高的運動精度，回轉(zhuǎn)誤差一般在0.2μm以下，這樣既提高了砂輪的使用壽命，又可以達到很高加工精度和很低的表面粗糙度。液體動靜壓軸承的使用更使得高速主軸得到充分的利用。

【關(guān)鍵詞】 靠模；高速磨削；高速主軸；液體靜動壓軸承

Design General Information

camshaft is part of the engine valve train, and dedicated to drive the valve open time and off, is to ensure that the inhalation of the fresh fuel mixture engine at work from time to time for the cylinder, and promptly to the combustion exhaust gas cylinder. Camshaft high machining accuracy, the entire processing can not be completed within a process. To meet the processing requirements in order to contribute to the progressive, the whole process is divided into three stages: roughing - semi-finishing - finishing in order to complete the purpose and tasks of the different stages of processing. In the machining of gears, the most important is also the most difficult processing of the cam-shaped surface. Turning and grinding of the shaped surface processing methods. Camshaft blanks using the method of casting blanks of high precision, less cutting, so the grinding process to simplify the processing of the cam-shaped surface. JKM8318 CNC camshaft grinder is based on the current market needs, improve on the basis of the original simple numerical control, coordinate camshaft grinder developed high-speed, efficient CNC camshaft grinder. The CBN grinding wheel, wheel wire speed 80-120 m / s, organically by mold and CNC grinding two-loop grinding and CBN grinding wheel, powerful grinding two integrated processing efficiency is much higher than ordinary cam grinder 1-2 times the work, good stability, simple operation and maintenance, high degree of automation, and has a leading position in the country, this machine is mainly used in automobiles, motorcycles, internal combustion engine camshaft roughing and semi-fine grinding. Main Characteristics: Germany's Siemens (SIEMENS) 802Dsl or the Huazhong HNC210B CNC system, control the table moves, the wheel frame feed, spindle head frame, and guide wheel mobile. With independent intellectual property rights of the company. Choice of single CBN grinding wheel and CBN grinding wheel. The wheel frame rails using hydrostatic unloading wear plastic coated rails. Wheel dressing with electric spindle diamond roller dressing. Use of high-speed grinding technology, high-speed grinding and grinding JKM8318 compared with outstanding technical advantages can greatly improve the grinding efficiency, reduce equipment number of greatly improving the grinding efficiency, and significantly reduce the grinding force to improve the machining accuracy. Can significantly reduce the grinding force, improve the machining accuracy, and achieve the hard and brittle materials (such as engineering ceramics and optical glass, etc.). With the application of high speed grinding wheel frame, CBN high speed built-in electric spindle wheel frame has been used. The wheel frame in high-speed spindle with high motion accuracy and rotation error is generally below 0.2μm, so that not only improves the service life of the grinding wheel, but also can achieve high machining accuracy and very low surface roughness. Hydro Bearing the use of more high-speed spindle can be fully utilized.

[Keywords]：By mode; high-speed grinding; High Speed Spindle； Static and hydraulic dynamic bearing