Jump to content

  • Welcome to Auto Parts Forum

    Whether you are a veteran automotive parts guru or just someone looking for some quick auto parts advice, register today and start a new topic in our forum. Registration is free and you can even sign up with social network platforms such as Facebook, Twitter, Google, and LinkedIn. 

     

Characteristics of automobile curved surface drawing parts


Recommended Posts

    Automobile surface drawing parts have the following characteristics:

    1.Deformation characteristics

    The deformation characteristics of large curved surface parts are as follows: the periphery is deep drawing, and the interior has bulging components. The surface shape is supplemented by the exterior material of the pressing surface and the interior by the material extension to meet the bulging requirements. At the same time, due to the deep drawing depth and complex shape, the distribution of deformation parts is uneven. Therefore, controlling the direction and velocity of material is extremely important. The part of large curved surface is easy to wrinkle and crack easily.

    2.There must be enough stable blank holder force.

    Large curved surface parts require not only certain drawing force, but also enough stable blank holder force in the process of drawing. This kind of workpiece is often a large contour size, deep space surface, so the need for deformation and blank holder force are larger. In the ordinary single-action press with air cushion, the blank holder is only about 1/6 of the nominal tonnage, and the blank holder force is not stable, it is difficult to meet the technological requirements of such parts, so in a large number of production, the drawing of such parts are carried out on double-action press. The double-action press has two sliders for drawing and blank-holder, i.e. inner slider and outer slider. The blank-holder force can reach more than 40% - 50% of the total drawing force. It can satisfy the requirement of uneven distribution of deformation around the workpiece, and the blank-holder force is stable, and it is easy to get the deep-drawing parts with better stiffness.

    3.The drawing parts must have enough stiffness.

    Most of these parts are used as the exterior of the machine, requiring sufficient stiffness (no trembling and noise in use) and dimensional stability (to ensure the quality of welding and assembly). This requires that all parts of the material be subjected to uniform tensile stress (ideally a two-way tensile stress state) in the drawing process, and that the tensile stress exceeds the yield limit, but is lower than the strength limit, so that the elastic recovery of the workpiece is reduced to a minimum, so that the shape is not distorted, but also not rupted.

Po50z9.jpg

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Similar Content

  • Similar Topics

    • By RobertScott56
      If you're in need of an auto parts repair shop in Houston, there are numerous options available to you. One highly recommended establishment is Carmotive, a well-known chain with multiple locations across the city. They offer a wide range of auto parts and accessories, along with knowledgeable staff who can assist you in finding the right parts for your vehicle. Another reputable choice is O'Reilly Auto Parts, which also has several branches throughout Houston. Their stores carry a comprehensive selection of parts and tools, and their staff is known for their helpfulness and expertise. Additionally, Advance Auto Parts is another reliable option, known for its extensive inventory and convenient locations. No matter which shop you choose, be sure to call ahead to confirm availability and any specific services they offer, ensuring a smooth and efficient repair process for your vehicle.
    • By Dorman Products
      Technician Challenge: How well do you know auto parts? Part 2!
    • A-premium Auto Parts:5% OFF with Code GM5.
    • By Counterman
      The Auto Care Association last week testified before the Idaho State Senate Commerce and Human Resources Committee in opposition to Senate Bill 1233, which would add language to an existing law that requires insurers to notify consumers in writing if they specific aftermarket parts for a collision repair.
      Currently, Section 41-1328B of the Idaho Code states, “It shall be an unfair claim settlement practice for an insurer to specify the use of nonoriginal equipment manufacturer aftermarket crash parts in the repair of an insured person’s motor vehicle, or for a repair facility or installer to use non-OEM aftermarket crash parts to repair a vehicle, if the consumer has not been advised in writing.”
      SB 1233 proposes to:
      Add headlamps, fenders, hoods, tail lamps and bumper components to the definition of aftermarket crash parts Add language to written disclosure statements telling consumers that non-OEM crash parts may affect safety and performance of a vehicle Recommend that consumers consult with a qualified industry expert or repair shop before making any decisions regarding the use of non-OEM crash parts Although SB 1233 was introduced in late January, it was swiftly advancing in the Idaho State Senate. Alongside Auto Care Association members, the association quickly took action to prevent the bill from becoming law, sending letters of opposition to the committee members highlighting its impact on aftermarket businesses in Idaho.
      “In Idaho specifically, our industry provides over 12,492 jobs, generates $1.6 billion in economic activity and provides $679 million in wages,” said Tod Moore, manager, grassroots and advocacy, Auto Care Association. “SB 1233 would have immediate, detrimental effects on this otherwise vibrant aftermarket ecosystem, not to mention the negative effect it will have on consumers.”
      During the hearing, the committee heard testimony from individuals both supporting and opposing the bill before ultimately voting to hold the bill in committee and thus preventing it from moving forward. Similar legislation also was recently defeated in Washington state.
      For more information about the Auto Care Association’s latest government affairs activities, visit the association’s
      link hidden, please login to view. The post
      link hidden, please login to view appeared first on link hidden, please login to view.
      link hidden, please login to view

×
  • Create New...