JINING QINFENG MACHINERY HARDWARE CO.,LTD
JINING QINFENG MACHINERY HARDWARE CO.,LTD
Home> News> A variety of tool holder selection skills, work easier
July 17, 2020

A variety of tool holder selection skills, work easier

Tool handle specification

The 7:24 taper TOOL HOLDER is used in most CNC tool handles, and the corresponding type of tension structure of the rivet is used to match with the spindle of the machine tool. There are various specifications of toolholder, commonly used are 40, 45 and 50. At present, iso7388-1983, GB 10944-1989, MAS 403-1982, ANSI / ASME b5.50-1985 are widely used in China. When selecting the Tool Holder, it should be considered that the specification of the tool holder is suitable for the machine tool spindle and manipulator.

Specification and quantity of toolholder

The integrated TSG tool system includes 20 kinds of toolholders, with hundreds of specifications. Users can select the types and specifications of toolholders according to the NC processing technology of typical parts, which can meet the processing requirements and avoid overstocking. Considering that there are a certain number of toolholders in pre adjustment or tool grinding while CNC machine tools are working, the number of toolholders is usually 2 ~ 3 times of the required ones.


Matching of tool and handle

Attention should be paid to the matching between the tool holder and the tool, especially when selecting the tapping tool holder, the size of the screw tap driving square head should be paid attention to. In addition, the use of single edge boring tool on CNC machine tools can avoid scratching the workpiece during tool withdrawal, but attention should be paid to the position direction of the tool tip relative to the keyway on the toolholder: some machine tools require the same orientation with the keyway, while others require that they are perpendicular to the keyway orientation.

Select high efficiency and compound tool holder

In order to improve the machining efficiency, we should choose high efficiency tool and handle as much as possible. For example, the double edge boring tool handle can be selected for rough boring, which can not only improve the processing efficiency, but also reduce the cutting vibration; the powerful spring chuck can not only clamp the straight shank tool, but also clamp the tool with hole through the connecting rod. For the typical workpieces with large batch and complex processing, composite tools should be selected as far as possible. Although the cost of composite tools and toolholders is relatively expensive, the use of composite tools in machining centers can combine multiple processes into one process and be completed by one tool, which is conducive to reducing the processing time and tool change times, and significantly improving the production efficiency. For some special parts, specially designed composite toolholder can also be considered.
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