31results about How to "Effective centering" patented technology

A method for using an adjustable exercise device is described that allows for performing a wide variety of different exercises. In one embodiment the exercise device includes an elongated member with ends for supporting a user by their hands, fingers, feet and / or legs, where the device is movably supportable by a structure. The method includes adjusting the distance between the ends, positioning the device relative to the structure, and exercising. The user may support a portion of their weight on the ground and a portion from the ends of the device, and exercise by moving their body with their body thus supported. In alternative embodiments, the device may be supported by a door, a pole, a tree or some other suitable structure.

In a method for aligning and mounting two components, a guide part and a follower part, on a support member in a positionally accurate manner, and a joining region of these components, in order to align two components relatively to each other and to other adjacent components, on a support member, in a positionally accurate manner and with a minimum amount of expenditure, the following method steps may be provided: the guide part is placed in position on the support member; a distance element is inserted into the openings in the guide part and the follower part so that it fixes the position of the follower part relative to the guide part; and the follower part and the guide part are jointly fixed in position in the attachment region, with respect to the support member.

A device for guiding a boat onto a trailer, the trailer having at least two longitudinal side rails, the device including a mounting assembly for attachment to a side rail to provide for transverse adjustment relative to the side rail's longitudinal axis and a bumper assembly attached to the mounting assembly and having at least one bumper mechanism that moves between an engaged position in which the device guides the boat into an aligned position on the trailer and a disengaged position in which the bumper mechanism is moved away from the boat to avoid contact with the boat.

An exercise device having many advantageous features is described, including the ability to provide a user selected resistance from nearly zero resistance to the user's full body weight, the ability to easily adjust between exercises and between users, and the ability to balance the device between reconfigurations to provide for ease-of-use. The device includes an inelastic adjustable length member with two arms and a grip at both ends, and a centrally located anchor that provides for a distribution of the length between the arms. In one embodiment, the exercise device is compact and can be removably attached to a door frame. When grabbing each of the grips and uniformly pulling away from the anchor, the arms of the device center on the anchor.

A method for manufacturing a semiconductor package that includes forming a frame inside a conductive can, the frame being unwettable by liquid solder.

The invention discloses a hydraulically driven high-pressure rotary grinding head for radial drilling in casing pipes, which includes a lower joint, a body, a core and a grinding head. The tail of the body is connected; the core is provided with an axial through hole, and the core is set in the body, and the expanded diameter section of the core forms a clearance fit with the outer body, and the tail of the core forms an axial cavity with the lower joint or the body. Sealing and sliding fit, the end of the core is connected with the grinding head; the end of the grinding head is conical, and the grinding head is provided with spray holes in the front and rear directions, and the spray holes are connected with the cavity inside the grinding head; the body and the core are both There are radially distributed straight holes, the straight holes of the body communicate with the inner cavity of the body, and the straight holes of the core communicate with the through holes of the core. When the invention performs jet drilling, the pump is turned on, and the grinding head rotates at high speed to generate high-pressure water jets to spray the rock formation. At the same time, the grinding head moves forward under the action of self-traction force. Finish.

The invention discloses an electrical control EGR valve for reducing working temperature and improving working reliability. A diesel engine electrical control EGR technique is one of main techniques for eliminating discharge pollution. For an electrical control EGR structure, a fin structure is adopted to reduce the working temperature of an executing mechanism by enlarging the radiating area of a cold-end air inlet pipe; a cylindrical isolation cover is arranged on a butterfly valve transmission rod and is used for isolating convection and radiating heat transfer of high-temperature air inflow to the driving executing mechanism; an inlet / outlet hole is formed on a dustproof cover of a transmission mechanism to take heat of a transmission component away by utilizing natural convection so as to reduce the working temperature thereof; a metal scraper ring outside a transmission rod scraps carbon deposition attached to a centered transmission shaft so as to protect transmission centering reliability and the linear contact of the surface of a spherical valve and a valve body, and the peripheral contact of the valve rod and the valve body is ensured under eccentric and deflective states so as to realize sealing; and good seal is simultaneously realized under the conditions of oil dirt, carbon deposition and the like on the valve. The structure has the advantages of reducing the electrical control EGR working temperature and improving the working reliability.

The invention discloses an outer cone grinding centering fixture. The outer cone grinding centering fixture is characterized in that a fixture body is made of spring steel, a center hole of the fixture body is a double-section combination hole, and a left threaded hole section and a right oil injection hole section are connected with each other to form the center hole; a plug is arranged at the threaded hole section of the center hole of the fixture body, and the right portion of the plug extends into the oil injection hole section of the center hole; the fixture body is of a four-section stepped shaft structure and sequentially comprises a first cylinder section, a second cylinder section, a third cylinder section and a fourth cylinder section from the left to the right, the diameters of the first cylinder section, the second cylinder section and the third cylinder section are gradually increased, and the diameter of the fourth cylinder section ranges from the diameter of the second cylinder section to the diameter of the third cylinder section; at least three counter-bored holes are peripherally uniformly formed in the third cylinder section of the fixture body, a radial hole is further formed in the third cylinder section, an oil return pipe is connected to an outer orifice of the radial hole by screws, and the inner end of the radial hole is communicated with the middle of the oil injection hole section of the center hole of the fixture body. The outer cone grinding centering fixture has the advantages that workpieces can be effectively centered by the aid of the outer cone grinding centering fixture, and the outer cone grinding centering fixture is high in centering precision.

The invention provides a handheld type expansion sleeve centering gear-shaving fixture. The gear-shaving fixture comprises a static pressing plate, a double-cone expansion sleeve, a movable pressing plate and a mandrel. A positioning pipe is arranged in the middle portion of the clamping end of the static pressing plate in the axial direction; the mandrel is sleeved with the movable pressing plate, and a first compression spring is arranged between the movable pressing plate and the supporting end face of the mandrel in the axial direction; the mandrel and the inner side of the positioning pipe are in hole axs clearance fit; the mandrel is further sleeved with a centering mechanism for ejecting a workpiece center through hole; a plurality of expansion groove openings are formed in the two ends of the double-cone expansion sleeve, and the inner sides of the two ends of the double-cone expansion sleeve are in inner cone face arrangement with outward large ends; one end of the double-cone expansion sleeve is matched with the outer portion of the positioning pipe for expansion, and the other end of the double-cone expansion sleeve is matched with the centering mechanism for expansion; when a workpiece is clamped, the clamping end of the static pressing plate and the clamping end of the movable pressing plate are used for clamping the two ends of the workpiece, and the other end of the static pressing plate and the mandrel are matched with tips on the same side of a machining tool; and the movable pressing plate is in contact with the clamping end face of the workpiece firstly for pressing and clamping, and the centering mechanism presses one end of the double-cone expansion sleeve for expansion and centering.

The invention discloses a pipeline centring method. The pipeline centring method comprises the steps that centring devices are jointed; initial values are set; the coordinates on a first pipeline aredetermined; the axis equation of the first pipeline is determined; the coordinates on a second pipeline are guided out; displacement is determined; and centring is carried out according to the displacement. Meanwhile, the centring devices with clamping mechanisms are adopted. The centring method is provided, the centring devices which are provided with the clamping mechanisms and can move in the Xdirection, the Y direction and the Z direction are adopted, the coordinates of the first pipeline are adopted as the datum, the second pipeline is adjusted through the displacement, and therefore fast, effective and convenient pipeline centring is achieved.