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1362 results about "Reamer" patented technology

A reamer is a type of rotary cutting tool used in metalworking. Precision reamers are designed to enlarge the size of a previously formed hole by a small amount but with a high degree of accuracy to leave smooth sides. There are also non-precision reamers which are used for more basic enlargement of holes or for removing burrs. The process of enlarging the hole is called reaming. There are many different types of reamer and they may be designed for use as a hand tool or in a machine tool, such as a milling machine or drill press.

Expandable surgical reaming tool

InactiveUS20070016211A1Effective reaming/cuttingIncrease the effective diameterSurgeryRotational axisSurgical drill
An expanding reamer for reaming or cutting a concave surface, for example, for reaming an acetabulum in preparation for implanting a prosthetic component during a hip arthroplasty. A rotating shaft cooperates with a surgical drill or other power source at one end and rotates a reamer head at the other end, and an actuation system expands one or more blades on the reamer head. The reamer head comprises one or more cutting blades, which act as segments of a cutting sphere, wherein the blades are expandable in directions non-parallel to the plane of the respective blades in order to enlarge the cutting sphere. Upon rotation of the reamer head, the blade(s) form a portion of an effective cutting sphere that is preferably greater-than-180-degrees; this allows greater flexibility in placement of the shaft of the reamer relative to the surface being reamed, for example, relative to the center of axis of the acetabulum. In one embodiment, two parallel blades move out away from each other and away from the rotational axis of the device, staying parallel to each other to become, in effect, more distanced, but still parallel, segments of a larger cutting sphere. In another embodiment, two blades start generally parallel to each other and to the rotational axis of the device, but pivot out from each other in directions generally perpendicular to their respective blade planes, again becoming more distanced, but not parallel, segments of a larger cutting sphere.

Drilling rig with following pipe pile and construction method for following pipe pile

Disclosed are a drilling rig for drilling with a following pipe pile and a construction method for the following pipe pile. The drilling rig is provided with a chassis, a platform, a cab, a power system, a hydraulic system, a control system, upright columns, supporting rods, a vertical winch, a power head, a soil discharge box, a spiral drill stem assembly, a reamer bit, a vibration exciter, an adjusting cylinder, a manned hanging basket, a hanging basket winch, a pressurizing winch, an auxiliary winch and a pile controller, wherein the platform, the cab, the power system, the hydraulic system and the control system are located on the chassis, the upright columns and the supporting rods are mounted on the platform, and the auxiliary winch is used for hoisting heavy objects. The construction method for the following pipe pile comprises following steps: leveling the pile controller after the pile controller is aligned with a pile location and adjusting verticality of upright columns of the drilling rig; mounting a prefabricated pipe pile and a drill and leading the reamer bit to penetrate out of the lower end surface of the prefabricated pipe pile; forwards rotating the power head, leading a reamer wing of the reamer bit to be opened to begin to realize reamer drilling and leading the prefabricated pipe pile to be jacked in afterwards; backwards rotating the power head after a preset depth is achieved, withdrawing the reamer wing of the reamer bit to be closed, lifting out the reamer wing of the reamer bit from the inside of the prefabricated pipe pile and starting the vibration exciter to impact the prefabricated pipe pile; and realizing grouting piling for the sides and the bottom of the pile.

Construction method of drilling follow casting pile used for building or bridge foundation

A method for constructing pipe piles while drilling for building or bridge foundations. The construction steps are to cover high-strength prestressed concrete pipes or steel pipes with drill pipes on the ground first, and install impactors and reaming retractable drill bits at the front ends of the drill pipes. , Follow the pipe while drilling, follow the pipe retaining wall, drill to the design elevation, stop drilling, withdraw from the reaming to shrink the drill bit, use the mud pump to clean the mud and sediment, pour concrete into the pipe, and simultaneously inject pressure grout to the outside of the pipe wall , stop when concrete and grout reach the ground; the object of the invention is to propose a construction method with fast construction speed, reliable quality, less material consumption, high bearing capacity of piles, mechanized operation, and environmental protection. In the construction method of bored cast-in-place piles, the use of mud retaining walls pollutes the environment, the hole is easy to collapse during the drilling process, the quality of concrete pouring is unstable, and the prestressed pipe piles are easy to cause the soil to rise. The strength of the pile body constructed by the invention is high. , There is no sediment at the bottom of the pile, and the pile end is completely rock-socketed, which can reach more than 2 times the bearing capacity of the same diameter bored pile.
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