Chucks Manual self-centering chucks for machine tools are divided into short and short conical chucks according to their connection to the end of the machine spindle.
Generally connected by a transition plate; the short-cone chuck can be directly connected with the end of the machine tool spindle, and the short-cone chuck connection is divided into four connection forms A1, A2, C and D. Because the A2 type is screwed to the outer ring of the spindle end of the machine tool, the strength is better than that of A1. However, due to the limitation of the internal structure of the chuck, except for the small part, most of them can only be used with the A1 type and the end of the machine tool spindle. Ring spiral splice connection. The C type is connected to the end of the machine tool spindle by bolt bolts. It is a kind of quick change chuck and can be quickly loaded and unloaded. The D type is connected to the end of the spindle of the machine tool by a tie rod, which is pinned by the end of the spindle. It is another type of quick change chuck. The taper hole of the short cone chuck is designed on the gland of the chuck, and is assembled with the chuck body by two inner and outer screws to form a closed structure, so the centering precision is high and the rigidity is good. The overhang is short.
The short taper has been widely used in the spindle end of foreign machine tools, so the short-cone chuck is an indispensable functional component for machine tools. Domestically, according to international standards, short-cone chucks have begun to spread. Although the short cone chuck is about 25% lower than the short cylindrical chuck, the actual cost difference is less than 10%, but the short cone chuck is much more valuable than the short cylinder chuck. The claw structure of the short cylinder and the short conical chuck is divided into two types: an integral claw and a separating claw; the integral claw - the basic claw and the top claw are integrated claws, and the base claw is connected by a cylindrical head hexagonal screw, which can be adjusted Use for positive or negative claws. .