7:24 in the BT tool handle of machining center refers to "7:24"?

With the widespread use of machining centers in the machining process of various parts, the use of tool handles of machining centers has gradually become widespread. However, there are many kinds of tool handles, so we must choose a tool handle with sufficient accuracy, economy and convenience. So, how do we choose? As a well-known enterprise, shenganbei CNC tool handle has a look at how it solves this problem!

Now CNC machine tools are widely used in factories. These machining centers and tools come from all over the world. They have different models and standards. Do you know the meaning of 7:24 in BT tool handle of machining center? Do you know what the BT, NT, JT, it and cat standards are?

The tool handle is the connecting body between the machine tool and the cutting tool. It is mainly used to connect the spindle of the machining center and the cutting tool. The tool handle is a key link affecting concentricity and dynamic balance. It must not be regarded as a general component. Concentricity determines whether the cutting amount of each cutting edge is uniform when the tool rotates for one cycle; When the spindle rotates, the dynamic unbalance will produce periodic vibration.

According to the spindle taper hole of machining center, it can be divided into two categories: SK universal tool handle with taper of 7:24; HSK vacuum TOOL HOLDER with taper of 7: taper of 1:10.

7: 24 refers to that the taper of the tool handle of the machining center is 7:24, which is a separate cone positioning, and the taper handle is longer. The conical surface plays two important roles at the same time, i.e. the accurate positioning of the tool handle relative to the spindle and the clamping of the tool handle.

The machining center will not be self-locking, and can realize rapid loading and unloading of tools; As long as the taper angle is machined to high precision, the connection accuracy can be guaranteed. Therefore, the cost of the tool handle is relatively low. CNC machining center has very strict requirements for tool stiffness, accuracy, durability, balance and so on. The selection of cutting tools should also pay attention to the analysis of workpiece structure and manufacturability, and comprehensively consider the machining capacity of machine tools, workpiece materials, process content, etc