摘要:
A rotary drill bit for drilling a subterranean formation may comprise a bit body, a cutting element coupled to the bit body, and a torque-generating assembly configured to apply torque, either continuously or periodically, to the cutting element. The torque-generating assembly may be powered by the rotary motion of the rotary drill bit or may be hydraulically or electrically powered. The cutting element may comprise a substrate, a table of superabrasive material disposed on an end of the substrate, and at least one impelling feature formed along the exterior surface of the substrate. In addition, a method of rotating a cutting element coupled to a drill bit for drilling a subterranean formation may comprise providing a cutting element comprising a table bonded to a substrate, coupling the substrate of the cutting element to a drill bit body, and applying torque to the substrate of the cutting element.
摘要:
A rotary drill bit for drilling a subterranean formation may comprise a bit body, a cutting element coupled to the bit body, and a torque-generating assembly configured to apply torque, either continuously or periodically, to the cutting element. The torque-generating assembly may be powered by the rotary motion of the rotary drill bit or may be hydraulically or electrically powered. The cutting element may comprise a substrate, a table of superabrasive material disposed on an end of the substrate, and at least one impelling feature formed along the exterior surface of the substrate. In addition, a method of rotating a cutting element coupled to a drill bit for drilling a subterranean formation may comprise providing a cutting element comprising a table bonded to a substrate, coupling the substrate of the cutting element to a drill bit body, and applying torque to the substrate of the cutting element.
摘要:
A multi-bladed tool system for use with automatic bar lathes and screw machines is disclosed. Parting and chamfering blades are claimed in an elongated holder in predetermined spaced relationship according to intended workpiece configuration by spacer elements and a set screw driven clamping jaw. The blades may extend through the length of the holder so that both ends of the blades may be used by reversing the holder. The blades are trapezoidal in cross section to provide for adequate transmission of clamping forces to all the blades.
摘要:
A cutting tool holder comprising an elongated holder body having a shaft receiving bore extending longitudinally therethrough, an elongated tool mounting shaft adapted to receive at least one cutting tool in a fixed position thereover and means for releasably retaining the mounting shaft in position within the holder body. The holder body is affixed to a metal removal or cutting machine by convenient conventional means with cutting tool positioned relative to a workpiece as desired. The holder may include means which permit a plurality of cutting tools to be simultaneously mounted on the shaft to accommodate the performance of a plurality of metal removal operations. The tool holder may also conveniently include a micrometer-like arrangement between the mounting shaft and holder body to provide indication means as to relative location of the cutting tool from a first normal position and means for supplying a continuous coolant fluid flow to the cutting tool.
摘要:
A combination cutoff and chamfer tool for mounting on a compound rest of a lathe or the like machine tool in which the chamfer tool is mounted adjacent to one side of the cutoff tool and both, cutoff tool and chamfer tool, are clamped together within the tool holder by means of a mechanical clamp device; the chamfer tool can be adjusted longitudinally relative to the cutting edge of the cutoff tool.
摘要:
A cam shaft tool for a slide type lathe. The invention generally comprises an improved adjustable tool wherein a plurality of holders each carrying a cutting insert is fixed to a main block via an adjustment block. The holder is radially adjustable relative to said adjustment block and axially relative to said main block. The invention also relates to a cutting insert holder for use in a cam shaft tool.
摘要:
A threading tool for providing a simultaneous cut in a plurality of adjacent grooves of a thread to enable a progressive cut to be taken with the light cut in each groove permitting a full thread depth to be cut with one pass along a turning cylindrical workpiece. The invention includes a means for presenting an array of cutting inserts at the proper angle to provide for the proper cut, at the same time setting up a proper plunge clearance for the cutting teeth with an independent pressure locator on each tooth in the form of an interdigital clamp designed to exclude the collection of chips and dust.
摘要:
A parting off tool has a cutting tip which is clamped between a lower blade member and the front of an upper clamping member. The clamping is effected by rotating the clamping member about a pivot point using a screw adjustment made on the rearward part of the clamping member, the blade member being held stationary. The cutting tip is adjustable using a pusher rod bearing against the rear face of the tip. A chamfer cutting blade can be mounted alongside the blade member so that the same tool can be used both for parting off and also for putting a chamfer on the workpiece left in a lathe. The combined operation can be performed simultaneously in some instances.