672 CA1340杠桿零件機(jī)械加工工藝及M4螺孔加工夾具設(shè)計(jì)【CAD圖+工藝工序卡+說(shuō)明書(shū)】
672 CA1340杠桿零件機(jī)械加工工藝及M4螺孔加工夾具設(shè)計(jì)【CAD圖+工藝工序卡+說(shuō)明書(shū)】,CAD圖+工藝工序卡+說(shuō)明書(shū),672,CA1340杠桿零件機(jī)械加工工藝及M4螺孔加工夾具設(shè)計(jì)【CAD圖+工藝工序卡+說(shuō)明書(shū)】,ca1340,杠桿,零件,機(jī)械,加工,工藝,m4,夾具,設(shè)計(jì),cad,工序
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課 程 設(shè) 計(jì)
題 目： CA1340杠桿加工工藝及
M4螺孔加工夾具設(shè)計(jì)
一、設(shè)計(jì)題目(學(xué)生空出，由指導(dǎo)教師填寫(xiě))
二、原始資料
(1) 被加工零件的零件圖 1張
(2) 生產(chǎn)類(lèi)型:中批或大批大量生產(chǎn)
三、上交材料
(1) 被加工工件的零件圖 1張
(2) 毛坯圖 1張
(3) 機(jī)械加工工藝過(guò)程綜合卡片(參附表1) 1張
(4) 與所設(shè)計(jì)夾具對(duì)應(yīng)那道工序的工序卡片 1張
(4) 夾具裝配圖 1張
(5) 夾具體零件圖 1張
(6) 課程設(shè)計(jì)說(shuō)明書(shū)(5000～8000字) 1份
四、四、進(jìn)度安排(參考)
(1) 熟悉零件,畫(huà)零件圖 2天
(2) 選擇工藝方案,確定工藝路線,填寫(xiě)工藝過(guò)程綜合卡片 5天
(3) 工藝裝備設(shè)計(jì)(畫(huà)夾具裝配圖及夾具體圖) 9天
(4) 編寫(xiě)說(shuō)明書(shū) 3天
(5) 準(zhǔn)備及答辯 2天
五、指導(dǎo)教師評(píng)語(yǔ)
成 績(jī)：
指導(dǎo)教師
日 期
摘 要
在機(jī)床上加工工件時(shí)，為了使工件在該工序所加工的表面能達(dá)到規(guī)定的尺寸和位置公差要求，在開(kāi)動(dòng)機(jī)床進(jìn)行加工之前，必須首先使工件占有一正確位置。通常把確定工件在機(jī)床上或夾具中占有正確位置的過(guò)程，稱(chēng)為定位。當(dāng)工件定位后，為了避免在加工中受到切削力、重力等的作用而破壞定位，還應(yīng)該用一定的機(jī)構(gòu)或裝置將工件加以固定。工件定位后即將其固定，使其在加工過(guò)程中保持定位位置不便的操作，稱(chēng)為夾緊。
通過(guò)以杠桿Φ20H7孔和其左端面為精基準(zhǔn)，運(yùn)用一面兩銷(xiāo)來(lái)限制工件的6個(gè)自由度，在實(shí)現(xiàn)中批生產(chǎn)的前提下，采用液壓缸來(lái)對(duì)工件進(jìn)行夾緊。滿足了該杠桿工件的生產(chǎn)要求。
由于本夾具配合面，連接孔較多，因此，夾具的零件對(duì)精度比較高，操作時(shí)要注意夾具各螺紋是否擰緊；還有就是夾具操作時(shí)，要防止定位零件有過(guò)大的磨損，若有較大磨損，要注意及時(shí)更換，以保證零件加工精度。
夾具上裝有對(duì)鉆套，可以使夾具在一批零件的加工之前很好的對(duì)刀，同時(shí)，夾具體上底面有一對(duì)定位鍵，可使夾具工作臺(tái)上在很好的定位。
工件裝夾是否正確、迅速、方便和可靠，將直接影響工件的加工質(zhì)量、生產(chǎn)效率、制造成本和操作安全。在成批、大量生產(chǎn)中，工件的裝夾是通過(guò)機(jī)床夾具來(lái)實(shí)現(xiàn)的。機(jī)床夾具在生產(chǎn)中應(yīng)用十分廣泛。
關(guān)鍵詞：機(jī)械制造 夾具 定位 夾緊元件
Abstract
In the processing machine parts, in order to enable the workpiece in the process by processing the surface can achieve the required size and location of tolerance requirements, starting in the machine for processing before, we must first make a correct position of the workpiece possession. The workpiece is usually identified in the machine tool or fixture in the possession of the correct location of the process, known as the location. When the workpiece positioning, in order to avoid being in the processing of cutting force, gravity, and so undermine the role and positioning, but also should use a certain body parts or devices will be fixed. After positioning the workpiece to be fixed, in the process to maintain the target of inconvenience in the operation, known as the clamp.
Φ20H7 to leverage through the hole and its fine base for the extreme left side, use a pin to limit the two parts of six degrees of freedom, in the realization of the grant under the premise of the production, use of hydraulic cylinders to the workpiece to clamp. Parts of the lever to meet the production requirements.
As the fixture with face, connecting more holes, so the fixture parts of the relatively high precision, the operation of the fixture should pay attention to whether the tightening thread; fixture is still in operation, to prevent the positioning is too large parts of wear and tear, if Have greater wear and tear, attention should be paid timely replacement to ensure that the precision machining parts.
Fixture is equipped with sets of drilling, so that the fixture in a number of processing before the good parts of the knife, at the same time, specific folder on the underside of a pair of targeting key fixture will work on stage in a very good location.
Workpiece clamping is correct, rapid, convenient and reliable, will directly affect parts of the processing quality, productivity, manufacturing costs and operational safety. In bulk, mass production, part of the fixture through the machine to achieve the fixture. Fixture for the production of machine tools in the application of a very wide range.
Keywords: Machinofacture Fixture Location Clamping components
目 錄
1.CA1340自動(dòng)車(chē)床杠桿工藝分析 錯(cuò)誤！未定義書(shū)簽。
1.1杠桿工藝分析及生產(chǎn)類(lèi)型確定 錯(cuò)誤！未定義書(shū)簽。
1.1.1杠桿的技術(shù)要求 錯(cuò)誤！未定義書(shū)簽。
1.1.2審查杠桿的工藝 錯(cuò)誤！未定義書(shū)簽。
1.1.3確定杠桿的生產(chǎn)類(lèi)型 錯(cuò)誤！未定義書(shū)簽。
1.2確定毛坯、繪制毛坯簡(jiǎn)圖 錯(cuò)誤！未定義書(shū)簽。
1.2.1選擇毛坯 錯(cuò)誤！未定義書(shū)簽。
1.2.2確定毛坯的尺寸公差和機(jī)械加工余量 2
1.3擬定杠桿的工藝路線 2
1.3.1定位基準(zhǔn)的選擇 2
1.3.2表面加工方法確定 3
1.3.3加工階段劃分 4
1.3.4工序的集中與分散 4
1.3.5工序順序安排 5
1.3.6確定工藝路線 5
1.4加工余量、工序尺寸和公差的確定 6
1.5切削用量、時(shí)間額定的計(jì)算 9
1.5.1切削用量的計(jì)算 9
1.5.2時(shí)間額定的計(jì)算 9
2.專(zhuān)用夾具設(shè)計(jì) 10
2.1 基本定位原理分析 10
2.2 定位基準(zhǔn)的選擇 10
2.3 定位誤差分析 10
2.4夾具操作簡(jiǎn)要說(shuō)明 12
2.5 夾具使用注意事項(xiàng)、保養(yǎng)及維護(hù) 12
3.方案綜合評(píng)價(jià)與結(jié)論 12
4.體會(huì)與展望 13
參考文獻(xiàn) 14
附錄1：機(jī)械加工工藝過(guò)程卡
附錄2：機(jī)械加工工序卡
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