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1、模具设计师（基础知识）什么是模具？模具在工业生产中的作用是什么？定义：在工业生产中，用各种压力机和装在压力机上的专用工具，通过压力机的压力，使金属或非金属在专用工具内变形、流动而获得所需形状和尺寸的制件，这种专用工具统称为模具。作用：模具是一种高效率的工艺装备，用模具进行各种材料成型，可以实现高速度的批量生产，并能在批量生产中保证稳定的制品质量。同时，模具也是实现少切屑与无切削加工技术不可缺少的工具，可节约原材料、降低制品的成本。模具技术和相关工业的发展水平，已被认为是衡量一个国家工业水平的重要标志之一。利用模具加工制品及零件有什么优点？1. 生产效率高2. 节约原材料3. 制品质量稳定4.
2、操作工艺简单5. 零件与制品可一次成型，无需再加工。6. 容易实现生产的自动化及半自动化。模具主要分为冷冲模和型腔模。冷冲模：在室温下把金属或非金属板料放在模具内，通过压力机和模具对板料施加压力，使板料发生分离或变形而制成所需零件的模具。包括1. 冲裁模2. 弯曲模3. 拉深模4. 成型模5. 冷挤压模。型腔模包括：锻模、合金压铸模、塑料模。塑料模又可分为压缩模、挤塑模、注射模模具生产的全过程：1. 模具设计（它是模具制造与装配的依据和基础）2. 模具制造工艺规程制定3. 模具原材料的运输与保存4. 生产的准备工作、模具毛坯的制造5. 模具零部件加工和热处理6. 模具的装配7. 试模与调模8.
3、 模具检验与包装简述模具设计的发展趋势？1. 高效、多功能模具2. 高质量、高精度模具3. 高使用寿命模具4. 模具标准化什么是CAD技术?现代数字化产品开发过程的特点与优势是什么？计算机辅助设计CAD是指工程技术人员以计算机为辅助工具来完成产品设计过程中的各项工作。特点：1.通过使用主模型、产品数据管理、产品可视化以及国际互联网技术，支持扩展企业范围内并行协作，实现从串行工程向并行工程的转变。2.捕捉、使用累积在设计与制造产品的人和过程中的知识，实现知识驱动的自动化设计、分析与加工过程，结果是大大缩短了产品开发时间优势：成本降低，效益增加，周期缩短。当前在模具设计中的哪些方面的使用CAD技术
4、？1. 建立制件的3D模型及收缩模型2. 确定制件的拔模角与分模线3. 建立模具的非标准件模型4. 建立模具的标准件库5. 模具的装配建模与总装配图6. 合模与开模过程的运动分析与碰撞检查。7. 制件成型过程的变形、热流仿真什么是冷冲模？冲裁模、弯曲模、拉伸模、成型模和冷挤压模的成形特点是什么？大国外交专题片全景呈现了中国外交的发展之路，反映了中国独具特色的外交智慧，尤其自党的十九大以来for examination and approval, to return part or all of the loan in advance. 5.8 contract contract specifi
5、c requirements: first, the borrower and other clients; Second, loan person double charge and other parties signed a contract with the borrower and agent signature of contract; Third, customers signed loan contract, contract of natural person, must be checked and fingerprinted by himself, you may not
6、 use personal name instead be signed, shall not authorize others to sign; Four, the pledgor, mortgagor due to special reasons not to sign the contract, may authorize others to sign the contract and retained after the notary notarized power of Attorney (parties abroad, outside the territory of China
7、sent or delivered by a power of attorney shall be certified by the notary public of the country, and certified by the Embassy or Consulate in the country). Agent required to audit mandates are clear, the content is complete (a power of Attorney sample record form five), whether the expiration date w
8、ithin PART_STORE_00102). Rule2 2nd set of goods was moved to the 2nd from the left the cage inside the vehicle Click on smart properties of oriented window screen to the right of login rule the period of validity, and audit the original identity card of the authorized person, and keep copies. Contra
9、cts signed by the authorized person authorized, in the signature bar marked authorized person, and signed by the authorized persons name; Five, contract signing and client identity, signature, fingerprint is clear; Six, fill in the contract specification subject to change should be stamped with the
10、account manager in charge name and thumbprint signature by the parties to show proof, blank partsettings |, suppresses bed 2 choice, bed to bed and set 1. Note 2: no storage of empty pallets out of the library, which had no cargo, even from the 2nd floor of the library, operator could not be unloade
11、d, so be sure to select 1. Set of layers using the toolbar in the L1 button and the L2 button, 1-and 2-story model can be displayed. Click the layer 2 . Start simulation can be seen even without manual operation after giving out instructions tray will automatically outbound scene. Instruction unit:
12、logistics management the management of humanities teaching and research guide book makers: developing period of Chen Xiao Juan Guide: 2015-3-15 guide book reviewer: He (a) the monthly interest payment, due in principal and interest with the Qing dynasty; (B) a one-time debt; (C) declining reimbursem
13、ent, namely, equal monthly repayment, decreasing loan interest; (D) the payments are of equal value, equal installments on a monthly loan payment of principal and interest. Second, specific method of repayment in accordance with the relevant operational management procedures. 5.6 roll over loans, ac
14、cording to the relevant business management approach of provisions, some personal loans approved, can apply for renewal; Second, within one year (inclusive) of personal loans, extended term total may not exceed the term of the loan; more than a one-year personal loan, extended term today added to th
15、e original term of the loan shall not exceed the maximum loan under the loan terms. 5.7 apply in prepayment prepayment a borrower shall be in writing and, after it has been accepted冷冲模是指在室温下把金属或非金属板料放在模具内，通过压力机和模具对板料施加压力，最终使板料在模具的上、下模作用下发生分离或变形而制成所需形状的零件，这类模具统称为冷冲模。冲裁模的成形特点：利用模具使板料的一部分沿一定的轮廓形状与另一部分产
16、生分离以获得制件。弯曲模的成形特点：将金属板料、棒料、管料或型材等坯料通过压力在模具内弯成一定的角度和曲率，从而获得所需形状的工件。拉伸模的成形特点：将平面毛坯或半成品成形，在模具上成形为具有一定形状、尺寸和使用要求的开口空心零件。成型模的成型特点：用各种局部变形的方法来改变零件或毛坯的形状。冷挤压模的成形特点：在室温下，在模具型腔内将金属坯料加压，使其产生塑性变形，挤压成所需的形状、尺寸及性能的零件制品。什么是塑料注射模？它的成形特点是什么？塑料注射模是用来成形热塑性塑料制品零件所使用的一种模具成型特点：塑料在注射机料桶中加热到流动（可塑化）状态后，闭合模具再以高压、高速将料桶内的粘稠塑料通过机床喷嘴注射入模具。塑料经浇注系统进入并充满模具型腔，然后经保压、冷却，固化成形为塑料件。常用的冲裁模有哪几种结构
