单件生产

To solve this problem, a mould production planning management system based on OKP mode is put forward according to the actual manufacturing condition, which aims to handle the changeableness and uncertainty problems in die and mould manufacturing enterprise.

本文针对模具制造企业实际情况提出了一种能够解决模具制造企业生产管理中多变性和不确定性问题的计算机辅助生产计划管理系统解决方案：基于单件生产模式的模具生产计划管理系统(Mould Production Planning Management System based on OKP Mode， OKP_MPPMS)。

This model has the following three features:(1)to ensure that products are deliver on time, e.g. if products are deliver before dude date or behead dude date, then earliness/tardiness cost will occur.(2)to consider both jobbing and small-lot production situations;(3) capacity requirements date of products are varying with period and are calculated from the product's BOM and production process.

在前人研究的基础上，建立了适合于单件小批的主生产计划模型，这一模型有3个特点：(1)保证产品及时交货，也就是提前和滞后于交货期都要受到惩罚；(2)模型考虑了带有小批与单件并存的生产情况；(3)产品对能力的需求数据，考虑了分时段分布特点，并采用聚合算法从工艺路线和产品结构数据聚合而成。

So research on material requirements planning system in little batch manufacturing mode will help accomplish manufacturing management system integration, help the enterprise establish an effective manufacturing management system, and improve enterprise manufacturing management and increase market competition capability.

因此对单件小批生产模式的物料需求计划系统的研究，将有助于企业在信息化的过程中实现对生产管理的集成，有助于企业建立一套有效的生产管理机制，促进企业生产管理水平和市场竞争力的提高。

The mold core processing all is generally the piecework.

模具型芯的加工一般都是单件生产。

The piecework -- product according to the order form design, according to the customer demand production, the product is very complex.

单件生产——产品按订单设计、按客户需求生产，产品很复杂。

Establishes optimized job-shop task scheduling function based on heuristic algorithm.The results of the research advance scheduling validity,resolve universal existent problem of single part production en...

上述研究成果将提高排产的有效性，解决我国单件生产企业在计划排产中普遍存在的问题，对于加强车间生产控制和管理起到促进作用。

Considering the gap between academic research and real world application, the characteristic of manufactories of "much variety and little batch", this paper discusses the abstraction and modeling of the workshop performance using colored Petri net characterizing definite description of DEDS. And rule bases are applied into the model to tackle the dynamic events and disturbances with dynamic scheduling. After analysis on agile response of MES and integration of its scheduling model, by adopting distributed component technology the workshop scheduling model was capsulated as a scheduler to realize the scheduling module of MES easier to be integrated and rapidly reused. Finally a prototype of scheduler is proposed.

鉴于最优调度理论与实际调度应用的距离，以及多品种单件小批量车间生产的特点，本文以某模具制造企业生产车间为研究对象，利用对离散动态系统具有准确描述能力的着色 Petri 网对车间生产进行了抽象和建模；并通过向网系统中引入规则约束，为车间内的动态事件和扰动提供了动态调度；在对 MES的敏捷性及其车间调度模块的集成性进行了多方面分析后，利用分布式组件技术将调度模型进行了软件封装，以便为 MES 提供一个功能独立、易集成、可快速重用的生产调度模块；最后给出了一个 MES 车间调度服务器和调度室客户程序的原型实现。

Takt time can be defined as the maximum time allowed to produce a product in order to meet demand. It is derived from the German word Taktzeit which translates to cycle time.

&一个流&生产的第一要点就是要使产品生产的各道工序做到几乎同步进行，使产品实现单件生产、单件流动。

The experimental research for heavy forging is limited due to the single-piece producing and large costs.

大锻件单件生产的特点，又限制了其工艺实验的可行性。

Die-core processing are generally single-piece production.

模具型芯的加工一般都是单件生产。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。