introduction to electric-discharge machining(EDM)
Electric-discharge machining is a reproducing forming process, which uses the material removing effect of short, successive electric discharges in a dielectric fluid. […]
Aluminum tooling is going into mold industry
Use of aluminum tooling has been an ongoing discussion for years, and the resulting flow of information has been a key part of aluminum’s growth as a mold material alternative. This continuous growth has led to advances in mold alloys, material size availability, mold design, finishing practices, coatings and welding techniques. More and more success [...]
A new mold manufacturing method
In moldmaking, manufacturers are constantly searching for ways to increase productivity by cutting production time and costs. Today, a hybrid process exists that allows additive machining and milling in the same setup to address those two challenges. […]
CAD/CAM/CAE Integration can benefit mold manufacturing
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 [...]
A perfect mold bench is a very important equipment
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 [...]
design of deep holes
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. […]
effects of drill wandering
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. […]
cooling of cutting edge
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 [...]
gun drill material
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 [...]
gun drilling and ordinary drilling
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, […]