The drill chuck is composed of a drill sleeve, a tension ring, a connection block, and a back cover. In the drill chuck, the axial positioning is achieved by using the connection block. By circumferentially toggling the jack, the axial movement is made under the action of the inner thread of the tension ring, and the drill is accurately and automatically centered and clamped under the action. When a drill chuck equipped with different drill tools (such as center drill, drill bit, reamer, tap, etc.) is needed during work, the positioning screw can be loosened, the fan-shaped body can be rotated to the required position, and the positioning screw can be tightened to realize the multi-position movement of the drill chuck.
The drill chuck uses a wrench to turn the front shell to drive the three claws inside to clamp the tool. The general clamping range of the drill chuck is 1-13 1-16 3-16 5-20 5-25. Generally, 1-13 and 3-16 5-25 are more commonly used. The taper shank at the back of the drill chuck has tapers of B10, 16, 18, 22, 24, and JT0 1 2 3 JT33. There are many other specifications. Please refer to the figure below.
Small drill chucks are also very useful in medicine and handicrafts. Small drill chucks of 0-0.4 are often used in dentistry and surgery. This medical drill chuck is made of stainless steel. The drill chuck is recognized by the majority of users because of its large holding range and convenient holding. Drill chucks are also widely used in woodworking machinery because of their large holding range, easy replacement of drill bits, and no restrictions on collets, so they are more convenient to use. The change of holding is achieved by adjusting the claws.
