Dimensional control skills for stainless stee
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Minghe Sand Casting Org Is Professional Sand Casting Encyclopedia Base.
PL surface, also known as: parting surface, slap ramen, refers to the part where the front mold and the back mold are in contact when the mold is closed.
The mating surface of the male and female molds parallel to the PL surface is called the piercing surface, and the mating surface of the male and female molds that is not parallel to the PL surface is called the inserting surface.
Both strips and silks are length units. Strips are in Taiwanese, 1 = 0.01mm, and silk is in Hong Kong, and 1 wire = 0.01mm, so 1 = 1 wire.
There are often notches on the edges of the shell plastic machining parts, which are used to install various accessories. The pillow-shaped part formed here is called the pillow position.
The shape of the reduced rubber part at the base of the BOOS column reflected on the mold after the eruption is called the mold crater.
Huh refers to Mo Ren, a idiom in Hong Kong.
The tiger’s mouth is also called: the tube position, that is, the part used to limit the position.
The product layout on the mold is called ranking.
The cavity of the product on the mold is called: the glue position.
The tendons on the product are called: bone position.
The BOSS column on the product is called: column position.
The gap on the mold is called: virtual position.
The hook used for connection on the product is called: buckle.
The pattern left after EDM is called the fire pattern.
EDM usually uses easy-to-process copper materials as discharge electrodes, which are called copper workers or electrodes. Copper workers are generally divided into rough workers, rough workers, young workers, and young workers, also called fine workers.
During the discharge process, the discharge gap between the copper and steel is called the spark level. The rough sparks are generally 15 to 50, and the young sparks are generally 5 to 15.
The avoidance of plastic products is also called thick.
The original body stay is relative to the cutting insert. The original body stay refers to a whole piece of steel as a processing blank, which is processed together during processing.
The line formed by the meeting of two strands of plastic is called a weld line.
After the plastic enters the cavity from the plastic inlet, it forms a curved and folded snake-like flow mark called a jet.
The standard of standard parts, DME is made in the United States, and HASCO is made in Europe.
The part of the product that cannot be directly demolded from the front and rear molds becomes an undercut.
Fool-proof is an idiom, which is to prevent a very simple mistake and prevent a daze! For example, if an insert is made with the same size hanging platform on the heaven and earth side, it is very likely that the heaven and earth side will be installed upside down during on-site assembly, but he will make the hanging platform on the side of the insert. At this time, if the heaven and earth side is installed reversely You can’t put it in, and it’s impossible to put it wrong. This kind of action to prevent errors from being in a daze becomes a daze.
Beer machine is a local idiom, which is what we often call injection molding machine, molding machine.
The mouth is the art line of the mouth, also known as the ugly line.
The flying model is the matching model or standard model.
The action of CNC machining finishing is called light knife, that is, it is processed in place on the basis of roughing.
The action of processing the position of the mold core on the mold base is called frame opening.
The method of inverting the front and rear mold material positions under normal conditions to open the mold is called reverse.
The ejection method in which small inserts are used to eject the part where there is an undercut is called floating.
When the mold is opened, the product stays in the front mold is called the front mold.
When ejecting, the mold force required is relatively large, and the ejector pin is not strong enough, so that the product is partially ejected. From the front of the product, there is an obvious white as the top white, which is also called the top nozzle.
The marks left by the entry point on the exterior surface of the system during diving are called bake marks.
The code is a clamping tool, a kind of cushion block with a triangular inclined surface opening slot.
Overcutting refers to excessive cutting, that is, the parts that do not need to be processed are also processed when processing the workpiece. Overcutting is not good.
The front mold pops out of the mold opening position.
Tapping. Tapping is called Yata.
When a product contains two different materials or different colors of the same material, design a two-color mold for molding.
Customers provide product drawings → analyze products → confirm plastic varieties → confirm mold materials → transfer engineering drawings → multiply and shrink to make mirrors → improve assembly drawings → order mold embryos → order mold core materials → draft → 3D parting → determine runners /Gating method→Refer to the ranking drawing for structural design→dismantle inserts→correct 3D→project drawing “including: mold core/insert/mold blank/parts”→make BOM table→proof and review.
Smooth and strong.
Direct glue feeding → overlapping glue feeding → side glue → ring feeding glue → sheet feeding glue → latent type → dispensing glue → horn type glue feeding → fan-shaped glue feeding.
The inclination of the slider is generally 20 degrees, and the inclination of the oblique guide column is generally 18 degrees.
The function of the cold slug well is to store the small part of the machining plastic material with lower temperature that enters the mold first.
The function of the positioning ring is to ensure the correct relative position between the mold and the injection machine.
There are three main types of fit: clearance fit, transition fit, and interference fit.
It is convenient for processing, prevents carbon deposits, facilitates polishing, saves materials, helps exhaust, facilitates replacement, and reduces processing machines.
Hardness indicates the ability of a material to resist hard objects pressed into its surface. Commonly used hardness indicators are Brinell hardness, Rockwell hardness and Vickers hardness.
The first corner painting method: the left view is placed on the right, the right view is placed on the left, the upper view is placed below, and so on;
The third triangle drawing method: the left view is placed on the left, the right view is placed on the right, the upper view is placed on top, and so on.
The basic principles of the three views are: the length is aligned, the height is flush, and the width is equal.
Commonly used water transports are: straight-through, surround, water tower, and spiral.
The overflow value refers to the size of the gap where the plastic product will overflow, (that is, the running edge) a value. The overflow value of ABS is: 0.04mm, the overflow value of pc: 0.06mm, the overflow of pA Edge value: 0.015mm, suitable wall thickness of POM: 0.04mm, PBT+15%GR overflow value: 0.03mm, PBT+30% overflow value: 002mm, PMMA overflow value: 0.065mm, PVC overflow value: 0.07mm, AS overflow value: 0.05mm, ps overflow value: 0.05mm, pp overflow value: 0.03mm, PE overflow value: 0.02mm.
The object deforms under the action of external force. When the external force disappears, the object can return to the deformation before the deformation is called elastic deformation. When the external force disappears, the deformation of the object before the deformation is called plastic deformation.
The role of water transport is to control the temperature of the mold core.
The plastic flow channel from the nozzle of the injection machine to the cavity is called the pouring system. The pouring system includes the main runner, the runner, the gate and the cold slug well.
Reverse engineering is the accurate and high-speed scanning of existing samples or models by a high-speed 3D laser scanner to obtain 3D contour data, coordinate with the reverse software to reconstruct the curvature, and perform online accuracy analysis and evaluation of the reconstructed surface. The structure effect and the final generation of IGES or STL data can be used for rapid prototyping or CNC machining.
Lack of glue→cloak→bubble→shrinkage→weld mark→black dots→stripe→lifting→delamination→peeling
Commonly used high-hardness heat-treated steel, such as: SKD61, 8407, S136