TOOL CLAMP AND TOOL CLAMP SYSTEM WITH TOOL CLAMP AND BODY Russian patent published in 2015 - IPC E21C35/18 

FIELD: process engineering.

SUBSTANCE: set of inventions relates to tool clamps and tool clamp systems. Tool clamp comprises body zone with tool seat exposed towards, at least, tool feed side. Locking handle extends from the body zone thrust side and has lengthwise axis and outer periphery main surface. Locking element loading zone is located on said locking handle first side. Opposite thrust side relative to handle lengthwise axis has zones of thrust surface arranged at the angle to each other and abut on each other in lengthwise axis extending along handle transition zone. Note here that locking handle outer periphery main surface zone features circular outer periphery outline. At least one zone of thrust surface relative to handle lengthwise axis extends, at least, partially, radially outward beyond the limits of locking handle outer periphery main surface. Note also that transition zone is composed of the recess.

EFFECT: improved distribution of stress and strain, higher durability and reliability.

19 cl, 12 dwg