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introduction：1、Components are created by assembling all major components with each other。This can include simple support structures or sheet metal parts that are not fully defined at this time。 2、Create or modify sheet metal parts in assembly mode using internal components as references。This process helps create support walls、Shape features to reinforce panels，Or create punches and grooves to strengthen components。 3、After defining the box and support structure with respect to the internal components and through the interrelation，Add all remaining components and features。 4、Create or select a bend table，This provides a material margin when the part is unrolled、The bending table data is used to secure sheet metal partsflat
2015-02-12 Reading quantity 2988
introduction： Single needle flat car 1-NEEDLE LOCKSTITCH M/C Single stitch chain sewing flat car 1-NEEDLE CHAINSTITCH M/C Herringbone flat car ZIG-ZAG STITCHES M/C Twin-needle machine TWIN-NEEDLE M/C Buttonhole machine BUTTONHOLE M/C Button sewing machine BUTTON ATTACHING M/C Jujube machine BARTACK M/C Clip burying car CHA
2015-02-12 Reading quantity 2844
introduction：globalize、Networking and virtualization have become an important feature of the development of manufacturing，The production of enterprises has a high degree of flexibility and rapid response to the market because of the application of relevant technologies。Virtual product development technology based on network is an advanced product development mode，The scope of its application will inevitably continue to expand，Bring greater benefits to more enterprises。 1． Web-based virtual product development and its development trend Virtual reality technology is already highly developedCAX（CAD、CAM、CAPP、CAEEtc.）The organic combination of systems，Ideas for products、Change and process optimization
2015-02-12 Reading quantity 2964
introduction： pre-lapping，The journal should be carefully checked for smoothness，Whether there is rust、Bruises and other defects，If there is, try to eliminate it first；then，Check contact between journal and shaft，Inspection method，Apply a thin layer of display agent to the shaft diameter（Like red pink、Red qian oil, etc），Then attach the journal toKOYObearing[KOYObearing:kOYOBearings are generally required to bear large loads，Often without a cage，Instead, fill the inner and outer raceways with rolling elements。And most small and medium-sizedKOYORolling bearings are equipped with retainers。 inKOYOBearing in processing flow
2015-02-12 Reading quantity 1518
introduction：National vocational skill appraisal unified examination paper Advanced lathe knowledge test paper GC-10 Matters needing attention 1.Please first fill in your name on the cover of the paper as required、The test number and the name of the unit。 2.Please read the answers to the questions carefully，Fill in your answer in the specified space。 3.Dont mark anything on the paper，Do not fill in irrelevant content in the label area。 Part 1, Part 2, Part 3, Part 4, Part 5. Total Score score Have to points scorer one、Gap filling（1～10topic。Please fill in the lines with the appropriate words
2015-02-12 Reading quantity 3024
introduction： Applicable material： Plastic filmPT、PE、PVC、OPP、KT、Aluminum foil、Beverage bottle logo；Various plastic composite materials、Plastic bag、paper（Self-adhesive sticker、card）、Leather、cloth；Packaging container bag、Plastic product；Electronic component housing。 Working principle and structural characteristics： Use thermal printing tape instead of ink printing，Adopt special type transfer structure，Can be printed on any flexible packaging material。Clear print，Hard to erase；Hygienic and clean，No ink pollution，It is an economical and hygienic way of printing。 HP-241Technical parameter：
2015-02-12 Reading quantity 2885
introduction：Applicable model：K301and118 1、Abide by《General operating rules for casting equipment》Relevant provisions。 2、Check whether the wear of the scraper is heavy，In case of severe wear，Should be replaced。 3、Start with a running test，Then run empty2-3minutes，And check the transmission system（motor、coupling、retarder）、Whether the movement of the supporting roller and the rolling wheel is smooth，Just make sure everythings okay，Before production can proceed。 4、After the device starts properly，According to technical requirements，Add the sand mixture gradually，Do not clip metal or other hard blocks，If found，Should be shut down immediately。 5、In the production process
2015-02-12 Reading quantity 2957
introduction：Mechanical seal components are very strict in terms of manufacturing accuracy or installation accuracy，If improperly installed，It will affect the life and sealing performance of the seal，In severe cases, the seal will quickly fail。 This section describes the preparations and precautions before installation ①Check the type of mechanical seal to be installed、Whether the specifications are correct，Parts are missing。②Check the mechanical seal components for damage，In particular, whether the sealing ends of the moving ring and the static ring are damaged，If damage is found，Repairs or replacement of new parts are required。Each sealing element should be cleaned with gasoline or kerosene，Keep the surface of each component free of dust、Foreign body。
2015-02-12 Reading quantity 1630
introduction： A general term for all types of machinery and devices used in the plastics processing industry。Certain fluids and solids are transported﹑separate﹑crush﹑Grinding and drying and other common machinery and equipment﹐It also occupies an important position in the plastic processing industry﹐So it is often listed as plastic machinery。Design and manufacture of modern plastic machinery﹐In addition to the development of mechanical engineering and materials science﹐In particular, it is closely related to the research progress of plastic engineering theory。 According to the plastic product production process﹐Plastic machinery can be divided into plastic mixing machinery﹑Plastic molding machinery﹑There are four categories of plastic secondary processing machinery and plastic processing auxiliary machinery or devices。Plastic blending machinery for each
2015-02-12 Reading quantity 2815
introduction： What are the main components of electric forklifts The driving system is one of the key components of electric forklift truck。There are great differences in the structure of the drive system of various forklifts，There are also differences in the form of single motor arrangement。Because it is double motor drive，Good acceleration and climbing performance，High traction，Electronic speed adjusting system is adopted，Replace the original mechanical differential system，Usability has been greatly improved。 Hydraulic system of electric forklift A separate motor is generally used，Drive the gear pump，So as to improve the working system of its gantry
2015-02-12 Reading quantity 2948
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