ER32 refers to the installation of DIN6499 standard ER32 chuck. The ER3 chuck holding range is 1-20. The 16-degree taper shank at the back of the ER collet plays a positioning role. The contact surface between the 16-degree taper and the ER inner taper at the front of the tool holder directly determines the accuracy of the collet. The contact rate of the 16-degree taper shank of the Tihao collet reaches 90%, high-precision collet is the main testing standard. In front of the 16 is the nut eccentric ring locking groove with a diameter of 29 and a width of 3.6mm. This place is also critical. It determines whether the collet is well placed inside the nut. Take it out, it mainly cooperates with the nut. The front is a 60-degree taper. This taper is in contact with the 60-degree inside the nut. The nut is pressed into the tool holder through the thread, and moves inward through the 60-degree contact to achieve ER. Chuck support.
A cylindrical clamp used to hold drilling and tapping tools or milling tools mounted on the spindle of drilling, tapping, milling machines or machining centers. It is also called an ER collet. It can also be used to fix and reinforce parts that need to be modified and processed as a fixed locking device. ER spring chuck has large clamping force, wide clamping range and good precision. Widely used in boring, milling, drilling, tapping, grinding and engraving processing. ER chuck is a type of spring chuck, generally used with CNC tool holders.
The usage rate of elastic chucks has increased rapidly in the past two years, increasing nearly a hundred times compared with two years ago. With the continuous rise of small-scale processing industries, the quality and precision of processing are undoubtedly the biggest competition at present, and the emergence of such collets has become, to some extent, the key to the survival of small and medium-sized enterprises. In its regular use, the most commonly used ER collets are ER11-ER32, accounting for 9/10 of this type of collets.