Clamping means for a tool block in a vertical boring machine or the like

The combination of a tool block and a clamping mechanism therefor, for use in a vertical lathe

• or the like, which comprises
• a. a tool block mounting a cutting tool adjacent a lower end thereof,
• b. said tool block having clamp engaging means on opposite sides thereof,
• c. a clamp housing,
• d. a pair of spaced clamping bars movably mounted in said housing and engageable with the respective clamping means on said tool block,
• e. a common actuating means for actuating said clamping bars to clamp said tool block in said housing, and
• f. means for effectively distributing the clamping force applied by said actuating means, to provide solid thrust bearing support on the side of the tool block from which work approaches the cutting tool in a cutting operation, and a resilient thrust support for the other side of the tool block.

A combination of a tool block and a clamping mechanism therefor, for use in a vertical lathe or the like, which comprises,

• a. a tool block mounting a cutting tool adjacent a lower end thereof,
• b. said tool block having clamp engaging means on opposite sides thereof,
• c. a clamping housing,
• d. a pair of spaced clamping bars movably mounted in said housing and engageable with the respective clamping means on said tool block,
• e. a common actuating means for actuating said clamping bars to clamp said tool block in said housing, and
• f. means for effectively distributing the clamping force applied by said actuating means comprising first means for yieldably connecting said acutating means to one of said clamping bars and second means for non-yieldably connecting said actuating means to the other of said clamping bars,
• g. said other clamping bar being on the side of said tool block from which the work approaches.

A combination of a tool block and a clamping mechanism therefor, for use in a vertical lathe or the like, which comprises

• a. a tool block mounting a cutting tool adjacent a lower end thereof,
• b. said tool block having clamp engaging means on opposite sides thereof,
• c. a clamp housing,
• d. a pair of spaced clamping bars movably mounted in said housing and engageable with the respective clamping means on said tool block,
• e. a common actuating means for actuating said clamping bars to clamp said tool block in said housing, and
• f. means for effectively distributing a clamping force applied by said actuating means comprising an equalizer element engaging said clamping bars,
• g. fulcrum means engaging and supporting said equalizer element for limited rocking movement, whereby as said clamping bars are operated by said common actuating means to clamp said tool block in the housing any momentary imbalance in clamping forces is equalized by slight tilting movement of the equalizer element about said fulcrum means thereby achieving clamping force equalization.