Lecn Anhui Co., Ltd

In the past 30 years, the machine tool technology has been developed greatly in the world. The development of CNC machine tool technology has shown a variety of characteristics. The main trends of high-end CNC V-bevel cutting machine are high precision, high speed, multi-axis, high reliability, multi-functional composite, reconfigurable, low energy consumption, environmental protection and intelligence.   1. The global market development and changes With the development of industrial production and the continuous progress of technology, the low-end routers in the sheet metal industry can no longer meet the demand. The middle and high-end CNC router will occupy the mainstream of market demand. German machinery has always been the leading country in the global industry. In the past, countries would import advanced  high-end CNC machine  tools from Germany. However, we should not ignore the growing mid-range technology sector. Today, more and more emerging industrial countr...

  For these smaller threads, they are typically rolled on flat die machines. These flat die machines are of conventional design and have little to no calibration adjustment. In addition, the matching process must be done by a skilled operator, and because they are continuous cycle machines, the operator must place the part in the machine at the correct point in time to successfully roll the threads. To solve these problems, some manufacturers have tried rolling small bolts on cylindrical two-die machines, which are easier to set up because the dies, once matched, remain matched throughout the rolling cycle. With constant matching and single-cycle capability, operators can roll good threads without special timing points to bring the blank into the rolling position. The two cylindrical die configuration eliminates matching and blank introduction problems and allows the use of larger dies, but neither of these two-die machines has a vertical rolling axis, making it easier to feed when...

The shortage of aerospace quality fasteners is causing production delays for new aircraft programs and highlighting the need for new and better production processes.   The shortage of aerospace-quality fasteners led to production delays for the new aircraft program and highlighted the need for new and better production processes. As a result, we applied our expertise to determine how to improve the way threads roll on them. For thread diameters of 3/8" and larger, rolling is typically done in rolling machines with three cylindrical dies. These machines have been the preferred choice for cylindrical die rolling because they use a fixed vertical rolling axis and the dies are driven uniformly to roll the centerline, eliminating the need for work support inserts. In addition, the vertical rolling axis provides a stable blank loading position. However, the maximum die diameter that can be used in a three-cylinder die configuration without die collision is only about five times the diam...