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黃河科技學(xué)院畢業(yè)設(shè)計(jì)說(shuō)明書(shū) 第 IV 頁(yè)
金剛石鋸片磨弧機(jī)設(shè)計(jì)
摘 要
近幾年我國(guó)金剛石制品和硬質(zhì)合金工具業(yè)發(fā)展很快，給金剛石行業(yè)的發(fā)展帶來(lái)了機(jī)遇。特別是金剛石鋸片的使用使加工行業(yè)走到了一個(gè)新的領(lǐng)域，早期的金剛石鋸片是一種用手工鑲嵌天然金剛石而成的，但由于天然金剛石價(jià)格昂貴，早期不能大規(guī)模應(yīng)用于生產(chǎn)。1930年以后，隨著粉末冶金技術(shù)的發(fā)展，產(chǎn)生了焊接式金剛石圓鋸片。人造金剛石的誕生，使得金剛石工具制造業(yè)得到迅速發(fā)展，金剛石圓鋸片開(kāi)始大規(guī)模應(yīng)用于石材加工等行業(yè)。
現(xiàn)在采用激光焊接方式制造金剛石鋸片是近年來(lái)發(fā)展起來(lái)的新技術(shù),與傳統(tǒng)釬焊或壓制燒結(jié)鋸片相比,焊出的鋸片不但外觀好,鋸片精度和強(qiáng)度也大大提高。激光焊金剛石鋸片刀頭內(nèi)圓弧面的加工是生產(chǎn)過(guò)程中的關(guān)鍵工序,激光焊金剛石鋸片對(duì)刀頭圓弧面的要求比普通鋸片要高,圓弧面加工質(zhì)量的好壞直接影響鋸片的性能和壽命,良好的圓弧面可以提高鋸片的幾何形狀和尺寸精度,降低鋸片的偏擺量,提高焊接強(qiáng)度,防止脫齒,從而大大改善鋸片的使用性能和壽命。目前,國(guó)內(nèi)不少?gòu)S家進(jìn)口了激光焊金剛石鋸片生產(chǎn)線,其配備的磨弧機(jī)均為砂輪磨弧機(jī),使用過(guò)程中調(diào)整麻煩,精度難以保證,砂輪經(jīng)常堵塞,效率低,嚴(yán)重制約了生產(chǎn)線的能力發(fā)揮。因此設(shè)計(jì)一種用砂帶來(lái)磨金剛石鋸片的機(jī)器將會(huì)有更好的效果。
關(guān)鍵詞：高速切削，金剛石鋸片，高效，加工質(zhì)量
Diamond saw blades grinding arc machine design
Author：Ren ZhiQiang
Tutor：Li ChangShi
Abstract
Diamond products in China in recent years and carbide tools industry development soon, to the development of the diamond industry creates opportunity. Especially the diamond saw blades with processing industry come to a new field, early diamond saw blades is a kind of manual Mosaic natural diamond and become, but because the natural diamond expensive, early can't large-scale used in production. 1930 years later, with the development of powder metallurgical technology, and produced the welding type diamond circular saw blades. The birth of artificial diamond, diamond tool industry that is rapidly developing, diamond circular saw blades started mass used in stone processing industries.
Now the laser welding process manufacturing diamond saw blades is developed in recent years to new technology, and traditional qian welding or suppression than sintering saw blades, welding of the blades not only look good, saw blade precision and strength also greatly improved. Laser welding diamond saw blades in the manufacturing is head of circular arc the key process working procedure, laser welding diamond saw blades for the head of circular arc than ordinary higher requirements blades, circular arc surface processing quality direct impact on the performance of the blades and life expectancy, good surface can improve the circular arc of the blades of geometry shape and size precision, lower blades of a partial quantity, improve the welding strength, prevent to take off the tooth, thereby greatly improve the blades of use function and life. At present, the domestic many manufacturers imported laser welding diamond saw blades production line, the grinding machine are equipped with the arc for grinding wheel grinding arc machine, use process adjustment trouble, hard to ensure accuracy, grinding wheel often jams, low efficiency, seriously restricted the production line of the ability to play. So the design of a sand grinding diamond saw blades with bring machine will have better effect.
Keywords :High speed cutting，diamond saw blades，efficiency，processing quality
目 錄
1、金剛石鋸片介紹 1
1.1 金剛石鋸片的用途和特點(diǎn) 1
1.2 運(yùn)輸和存放 1
1.3 金剛石圓鋸片的（焊接）加工 1
2、砂帶磨削技術(shù)的介紹 3
2.1 砂帶磨削的定義 3
2.2 砂帶磨削原理 3
2.2.1 主軸傳動(dòng)裝置 3
2.2.2 砂帶張緊裝置 3
2.2.3 砂帶導(dǎo)向裝置 4
2.2.4 接觸輪 4
2.3 砂帶磨削特點(diǎn) 4
2.3.1 加工效率高 4
2.3.2 加工表面質(zhì)量高 4
2.3.3 工藝靈活性大, 適應(yīng)性強(qiáng) 5
2.3.4 抗振性好 5
2.3.5 經(jīng)濟(jì)性好 5
3、機(jī)床的設(shè)計(jì)及計(jì)算 6
3.1 機(jī)床的總體結(jié)構(gòu)設(shè)計(jì) 6
3.1.1 傳動(dòng)設(shè)計(jì) 6
3.1.2 主要機(jī)構(gòu)設(shè)計(jì) 6
3.2 傳動(dòng)部分的設(shè)計(jì) 7
3.2.1 電機(jī)的選擇 7
3.2.2 砂帶的選擇及計(jì)算 7
3.2.3 砂帶磨削過(guò)程中的受力分析 8
3.3 張緊機(jī)構(gòu)及快換操縱機(jī)構(gòu)和調(diào)偏機(jī)構(gòu) 9
3.4 接觸輪主軸設(shè)計(jì) 10
3.4.1 選擇軸的材料 10
3.4.2 所承受的扭矩初估計(jì)軸的最小直徑 10
3.4.3 軸的結(jié)構(gòu)設(shè)計(jì) 10
3.4.4 軸的受力分析 11
3.4.5 軸的疲勞強(qiáng)度安全系數(shù)校核計(jì)算 12
3.5 張緊輪 16
4、夾具的設(shè)計(jì) 17
4.1 問(wèn)題提出 17
4.2 夾具結(jié)構(gòu)設(shè)計(jì) 17
結(jié)論 19
致謝 20
參考文獻(xiàn) 21