Milling Spindle and the Remarkable Applications

Posted on Mar 25, 2020


After the invention of turning machines, milling machines could be recognized as the second greatest machining machinery that changes human life style ever since. Inside the milling machine design ideology, the rotational spindles clamping the cutting tools are so convenient to processing because with this design the work pieces can be still and the cutting procedure is thus different from turning methodology.

Spindle specifications

There are many variables and specifications that determine the performance of the milling competence. One of them is the spindle speed. The speed of the spindle is a key parameter that determines the performance of the machining center. For high speed models, the RPM (revolutions per minute) standards differ and there is no such a common range. On the other hand, manufacturers in the Europe, Japan, and Taiwan have their consensus way of RPM standards, while the regional differences still are significant. Accordingly, in the metalworking sector, a turn and mill machine is also known as a CNC turning center; this is a machine tool capable of both turning and milling functions and rotates a work piece on an axis of rotation to perform various, machining operations such as cutting and turning assisted by the existence of turret units and the corresponding supportive accessories.

Power turret helps a lot in machining

Here, all of the discussions above are ideally processed with turret tools that are applied to the work piece and to create an object with symmetry with the axis which is driven by the primary spindle and assisted by live tools. As all the tools are prepared for the work pieces, so the clamping mechanism of the work piece is another critical point for the mill turn. In this way, the clamping mechanism is much more rigid and fixed due to the gravity effect compared to the horizontal methodology and manufacturers of vertical turning machines usually made their vertical turning machines into great manufacturing facilities for users in a variety of industrial sectors that pursue for high precision, such as automotive industry, aerospace sector, sport equipment application, and other fields with larger size work pieces and stuff.

Milling machines and the development history

As time passed, people rely on the machining strength of milling machines a lot and the trend is getting strong. Speaking of the CNC turn mill machines, just like other machining center models, this type of machining center is one of the very common and productive machine tools that is applied to heavy cutting tasks in the industrial sectors such as aerospace, automotive, and energy generation. Inside the model inventory, turret type CNC turn mill machine is a highly developed machine tool that can deal with multiple types of milling tasks at once. At first, machine center is evolved from milling machines at the 1960s and since then, the development of this specific type of machine tools progresses well in the industry, and after that machine centers are widely applied in all kinds of industries, contributing a wide range of commercial values.

Bearings of machine tool spindles

Machine tool spindle is one of the critical components of modern machine tools; spindles are designed in a wide variety of forms which is basically based on the driving mechanisms as well as other power systems. Regarding the classification, there are mainly belt driven, motorized, gear driven, direct driven, built in, etc. Compared with other driving mechanisms, direct drive spindles are designed with stronger torque power, faster and more accurate activation, while is with larger area coverage.

Spindle installation

Normally, a machine tool could contain several spindles, such as the headstock and tailstock spindles on a bench lathe machine, and the primary spindle is usually is the biggest one. Therefore, if the references to the spindle without further qualification imply that the targeted subject is the primary spindle. Industry today is with many available components to be put together. Machine tools with DD spindles are usually designed with larger machine body so that they can accommodate with the larger and longer spindle body, which eventually offer greater machining strength onto the work pieces or other objects.

Turning spindles and lathe spindles

The difference between turning and lathe spindles are not significant. While at the very beginning, lathe machines are installed with belt-drive spindles because the spindle design were simple then and there were no much options in the market. Belt-driven spindles features many good features and are easy to maintain due to its structural characteristics. Therefore, even now many turn mill machines manufacturers have much more spindle models to choose, belt-driven spindles are still a popular one. On the other hand, motorized spindles are also popular in the field of high end, advanced lathe machines such as turning centers with power turret and some turn-mill centers with multiple spindles at both the front and back sides. For the motorized spindle, the built-in spindles, there are many convenient advantages such as high torque, no tooth drop issue, better stability, etc. These two are not absolutely better from either one. At the meantime, such set of spindle housing the housing of the spindle case design would be much complicated compared with the belt-driven counterparts. As a result, the design of spindle cases bases on not only functionality but also economic issues, and only with the balanced budget can buyers use them in an ideal manner.

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