Mold building in China is a very challenging business. Two of the difficulties are offshore competition and molders’ growing demands for early design involvement. One solution to combat these challenges is mold filling simulation. Its use can help mold builders stay competitive, enhance efficiencies, meet customer expectations and create more business opportunities. Following are four [...]
Maintaining a fleet of molds in a timely and efficient manner is a support function, and the bench is a critical part of the mold maintenance process. However, this is also a piece of equipment that is given not so much as a second thought by many companies, and I’ve seen plenty of examples of [...]
Avoid interrupted cuts. Because the tungsten carbide head is fairly brittle, a gun drill should always cut into solid material to avoid breaking of the cutting edge. […]
When drilling two deep holes from opposing sides to create an extra long hole, they may meet only partially. To prevent a flow restriction, the hole depths should be specified so that the holes overlap at least 10 mm at the meeting point. […]
The drill has a hole along it’s entire length through which coolant is pumped at high pressure. the coolant exits right behind the cutting edge. It cools and lubricates the drill for minimum friction within hole. It also washes the chip out through the open sector of the drill. The chips are then separated from [...]
The tip, at the working end of the drill, is made from a tungsten-carbide alloy, which is much harder and longer lasting than high-speed steel. The head is brazed to a long steel tubing, which is held at it’s other end in the machine chuck. The tip is about 40mm long when new, the cutting [...]
So far deep hole drilling( gun drilling) has been used more and more widely in injection molds. This method requires a special machine or a deep hole drilling adaptor to another machine, […]
modern tooling machines for mold making generally feature multiaxial CNC controls and highly accurate positioning systems. the result is higher accuracy and greater efficiency against rejects. […]
after heat treatment, the machined inserts are finished, ground and polished to obtain a good surface quality,because the surface conditions of a cavity are, in the end, responsible for the surface quality of a plastic part and its ease of release. Defects in the surface of the cavity are reproduced to different extends depending on [...]
competition has recently developed between high-speed cutting(HSC) and simultaneous five-axis milling. HSC is characterized by high cutting speeds and high spindle rotation speeds. Steel materials with hardness values of up to 62HRC can also be machined with contemporary standard HSC millers. Sometimes, HSC machining can be carried out as a complete machining so that the [...]