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时候:2020-02-21
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制定机器加工工艺规程的根基准绳是优良、、低本钱,即在整机品质请求的条件下,尽可能进步休息出产率和下降本钱。
The basic principle of formulating machining process regulations is high quality, high efficiency and low cost, that is, to improve labor productivity and reduce costs as far as possible under the premise of guaranteeing the quality requirements of parts.
休息出产率是指在单元时候内制作出及格产物的数目,或是指用于制作单件及格产物所耗损的时候。
Labor productivity refers to the quantity of qualified products manufactured in a unit time, or the time spent in manufacturing individual qualified products.
经济性是指机器加工顶用更少的费用制作出及格的产物。
Economy refers to the production of qualified products at the least cost in mechanical processing.
1.缩减根基时候
1. reduce basic time
进步休息出产率的工艺路子
Technological Ways to Improve Labor Productivity
(1)进步切削用量。增大切削速率、进给量和背吃刀量,都可延长根基时候,但切削用量的进步遭到刀具耐费用和机床功率、工艺体系刚度等方面的限定。
(1) Increase the cutting parameters. Increasing the cutting speed, feed rate and back feed rate can shorten the basic time, but the improvement of cutting parameters is restricted by tool durability, machine power and stiffness of process system.
(2)削减或重合切削路程长度。
(2) Reduce or coincide the length of cutting stroke.
(3)接纳多件加工。这类体例是经由过程削减刀具的切入、切出时候或使根基时候重合,从而延长每一个整机加工的根基时候来进步出产率的。多件加工的体例有以下三种:挨次多件加工、平行多件加工及平行挨次多件加工,如图1-11所示。
(3) Multi-piece processing. This method improves productivity by reducing cutting time or coinciding basic time of cutting tool, thus shortening the basic time of processing each part. There are three ways of multi-part processing: sequential multi-part processing, parallel multi-part processing and parallel sequential multi-part processing, as shown in Figure 1-11.
2.削减帮助时候
2. reduce auxiliary time
(1)接纳进步前辈夹具延长工件装卸时候。多量量出产时,遍及接纳气动、液动夹具来延长工件装卸的时候。单件小批量出产中,因为受公用夹具制作本钱的限定,为延长装卸工件的时候,可接纳组合夹具及可调夹具。
(1) Using advanced fixture to shorten the loading and unloading time of workpiece. In mass production, high efficiency pneumatic and hydraulic fixtures are widely used to shorten the loading and unloading time of workpieces. In small batch production, due to the limitation of manufacturing cost of special fixture, modular fixture and adjustable fixture can be used to shorten the time of loading and unloading workpieces.
 
济南铆焊加工
 
(2)接纳转位夹具、转位任务台、直线来去式任务台等。
(2) The use of transposition fixture, transposition table, linear reciprocating table, etc.
(3)接纳持续加工,如图1-12所示。
(3) Continuous processing is adopted, as shown in Fig. 1-12.
(4)接纳多种疾速换刀、主动换刀装配。
(4) Various quick tool changing and automatic tool changing devices are adopted.
(5)接纳主动检测或数字显现主动丈量装配。
(5) The automatic measuring device with active detection or digital display is adopted.
进步休息出产率的工艺路子
Technological Ways to Improve Labor Productivity
3.削减调剂时候
3. reduce the adjustment time.
(1)使刀具和夹具调剂通用化。
(1) Make tool and fixture adjustment universal.
(2)接纳可换刀架或刀夹。
(2) Use changeable tool holder or clamp.
(3)接纳刀具的微和谐快调。
(3) Fine tuning and fast tuning with cutting tools.
(4)削减夹具的装置找正时候。
(4) Reduce fixture installation alignment time.
(5)接纳调剂时候少少的进步前辈装备。
(5) Adopt advanced equipment with little adjustment time.
4.实行多台机床把守
4. Implementing multi-machine tool custody
5.接纳新工艺、新手艺