Dongguan sheet metal processing analysis common sheet metal characteristics Dongguan sheet metal processing analysis common sheet metal characteristics 2016 Biological Microscope,Celestron Biological Microscope,Biology Corner Microscope,Radical Biological Microscope Ningbo Beilun Kalinu Optoelectronic Technology Co.,Ltd , https://www.yxmicroscope.com
4.1.1 Hole
Definition: A penetrating feature formed by removing material on a sheet metal product is called a hole;
Shape: square holes, round holes and shaped holes;
Function: 1. Process hole (with weight reduction, ventilation, avoidance, etc.);
2. Positioning holes (holes that position between two products or between two features);
3. Hardware hole (the bottom hole for the riveting hardware and special room);
4. Salad hole ("c'sink" with tapered chamfered holes, such as riveted salad and rivet salad)
Production equipment: wire cutting, punch punching, laser cutting, NCT and drilling machines can be used.
4.1.2 Bending (BENDING)
Definition: The use of bending equipment to machine sheet metal material from a flat plate to an angled
A process of non-flat products; its characteristic is called "folding".
Shape: generally 90 degree flange, but also non-90 degrees. See the picture on the right:
Role: with positioning, strengthening strength, limit, avoidance, etc.;
Production equipment: It can be processed by bending machine, punching machine and NCT.
4.1.3 EXTRUSION
Definition: Open the pre-hole on the sheet metal product, and then use the tool to squeeze the material around the hole to form a protrusion.
The characteristics of the surface (can also be understood as a process);
Shape: round (screw bud hole, riveted bud hole), oval, square, shaped, etc. See the picture on the right:
Function: It has the functions of positioning, limiting, avoiding, fastening (such as screw bud, riveting);
Production equipment: It can be processed by bending machine, punching machine, riveting machine and NCT.
4.1.4 convex hull (EMBOSSING)
Definition: Using a tool to deform the material on the sheet metal product, thereby highlighting the surface without breaking
Cracking feature; this process is often called "FORMING"
Shape: round, oval, square, shaped, etc. See the picture on the right:
Function: It has the functions of strengthening, positioning, limiting, avoiding, and heightening;
Production equipment: large convex hull is usually made by hydraulic press or punching machine, small convex hull can also be used with bending machine and NCT
Processing.
4.1.5 Bump (BUMP)
Definition: A very small convex hull that protrudes from the surface of the product like a "dot" shape.
Shape: often round, see right:
Function: with positioning, limit, fastening (such as pressure welding);
Production equipment: It can be processed by bending machine, punching machine and NCT.
4.1.6 Segment difference (OFFSET)
Definition: The two adjacent bends on the sheet metal product are positive and negative, like the letter "Z", we call
The difference is (the general H value does not exceed 5T);
Shape: Shaped like the letter "Z", with a straight edge and a hypotenuse. See the picture on the right:
Role: with positioning, strengthening strength, limit, avoidance, etc.;
Production equipment: usually made with a bending machine and a step mold.
4.1.7 Bridge
Definition: The material is torn and formed into a convex surface such as a bridge shape by a jig on a sheet metal product.
The feature is called a bridge.
Shape: There are arcs, planes and shapes. See the picture on the right:
Function: It has the functions of strengthening, positioning, limiting, avoiding, and heightening;
Production equipment: It can be processed by bending machine, punching machine and NCT.
4.1.8 Press dead edge (HEM)
Definition: On sheet metal products, we call the 180 degree bend to the dead side. It needs to be completed in two steps;
That is, fold 30 degrees first, then flatten it with a flat die.
Shape: straight, oval, square, shaped, etc. See the picture on the right:
Role: with anti-scratch, avoidance, strengthening, etc.;
Production equipment: can be processed by bending machine and punching machine.
4.1.9 Half-cut (HALF-SHEAR)
Definition: On sheet metal products, a straight wall of less than or equal to half the thickness of the material is produced by shearing.
Convex, we call it a semi-shear feature (also can be understood as a process);
Shape: round, oval, square, shaped, etc. See the picture on the right:
Function: Generally used for positioning and avoiding; (common knockout holes use this feature process)
Production equipment: It can be processed by bending machine, punching machine and NCT.
4.1.10 Reinforcement (RIB)
Definition: On sheet metal products, similar to the effect of increasing the strength of the two folds on the folds
Convex-like features, we call them ribs;
Shape: Commonly a solid triangle (also has a convex convex hull). See the picture on the right:
Role: has the role of strengthening, avoiding, etc.;
Production equipment: commonly used bending machines and punching machines for processing.
Role: has the role of strengthening, avoiding, etc.;
Production equipment: commonly used bending machines and punching machines for processing.
4.1.11 Round
Definition: On the sheet metal product, the round-like feature formed by the bending of the material, we call it the circle;
Shape: roughly divided into two; see the right picture:
Function: It has the functions of positioning, beauty, strengthening, scratch prevention, etc.
Production equipment: commonly used bending machines with jigs, punches and other processing.
4.1.12 Embossing / Stamping Die (MARK)
Definition: Use a punch with characters and special graphics to press the corresponding characters and graphics on the surface of the sheet metal product. This process feature is called embossing or pressing die;
Shape: line or graphic.
Role: with positioning, limit, character identification, etc.;
Production equipment: It can be processed by bending machine, punching machine and NCT.
4.1.13 Attacking (TAP)
Definition: The process of tapping the hole (including the pumping hole) on the sheet metal with the tap to break the internal thread, we call it the attack
bud.
Shape: direct attack on the plate and first hole and then attack. :
Role: the locking bolt or screw acts as a fastening;
Production equipment: manual tapping and tapping with a tapping machine.
4.1.14 PRESS HARDWARE
Definition: Open the pre-hole on the sheet metal product, and then use the tool to pass the specified hardware through the pre-hole.
Firmly press-fit into the material, this process is called riveting hardware. ;
Shape: There are many, depending on the hardware. The picture on the right is one of them::
Function: It has the functions of positioning, limiting, fastening, etc.
Production equipment: It can be processed by bending machine, punching machine and riveting machine.
4.1.15 Connection and fastening
Definition: The process of joining two sheet metal parts or two faces together by rivets, rivets, screws (bolts), riveting buds and welding, etc., is called coupling (fastening). :
Role: fastening effect;
Production equipment: processing with rivet machine, rivet gun and spot welder
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