43results about How to "Guaranteed Position Requirements" patented technology

The invention discloses a manufacturing method of a clamp for turning end faces. The manufacturing method comprises the steps that 1, clamping claws on a three-claw self-centering chuck are taken down, and three screw holes are formed in the end face of the three-claw self-centering chuck and symmetrically distributed on the end face of the three-claw self-centering chuck in the circumferential direction; and 2, positioning columns are screwed in the screw holes respectively, the lathe positioning columns are started to rotate along with the three-claw self-centering chuck for turning a face formed by the end points of the positioning columns, the end points of the positioning columns are made to be on the same plane, and the positioning columns extend out of the three-claw self-centering chuck and can make contact with the first end face of a workpiece. The manufacturing method is convenient to implement, and the manufactured clamp can ensure the depth of parallelism between the two end faces of the turned workpiece.

The invention discloses a large-diameter die with the requirements on the positions of an inner ring and an outer ring and a processing method thereof, the die comprises the inner ring, the outer ring and a key slot, wherein the key slot is annularly formed on the periphery of the outer ring, and the die is characterized in that positioning pin holes which are consistent with the requirements on the position degree are respectively increased on the inner ring and the outer ring of the die, the axial lines of the positioning pin holes of the inner ring and the outer ring and the reference are interrelated on the same central plane, and the reference is the central line of the key slot. The processing method of the die comprises the following steps of: processing the outer ring and the inner ring separately, then performing press-fitting, respectively increasing the positioning pin holes which are interrelated with the reference on the inner ring and the outer ring of the die, using a clamp to well set the positions by utilizing the pin holes and further performing the press-fitting, wherein the axial lines of the positioning pin holes of the inner ring and the outer ring and the reference are interrelated on the same central plane and the reference is the central line of the key slot. By adopting the die, the complex shape of an inner cavity and the requirements on the position of the positioning reference of the outer ring can be ensured; simultaneously, the die is low in processing cost and high in processing efficiency, and can overcome the deficiencies in the prior art and meet the requirements of mass production.

The invention discloses a remanufacturing method of a steel piston. One method comprises the following steps of S1, primarily cleaning; S2, clamping for the first time; S3, repairing a male end; S4, clamping for the second time; S5, reducing a volume of a combustion chamber; S6, clamping for the third time; S7, repairing a steel piston ring side; S8, clamping for the fourth time; S9, repairing a pin hole; S10, cleaning after repairing; and S11, packaging. The other method comprises the following steps of S1, primarily cleaning; S2, clamping for the first time; S3, processing an inner positioning basis; S4, clamping for the second time; S5, repairing the male end; S6, clamping for the third time; S7, reducing the volume of the combustion chamber; S8, clamping for the fourth time; S9, repairing the steel piston ring side; S10, clamping for the fifth time; S11, repairing the pin hole; S12, cleaning after repairing; and S13, packaging. The remanufacturing method of the steel piston provided by the invention has the advantages of low maintenance cost, and capabilities of preventing resource waste, prolonging the service life of the steel piston, and repairing and processing in batch.

The present invention relates to a novel wire rope gear stopper, which comprises a frame body, on which a rotating shaft is arranged, and at least one pulley is arranged on the rotating shaft, and on the frame body there is also a The bracket with the radius of the pulley, the bracket is provided with a rope stop device, and a roller corresponding to the position of the pulley is also arranged on the said rope stop device, and at least one limit mechanism is arranged on both sides of the roller . When the steel wire rope needs to be disassembled, the present invention does not need to dismantle the whole rope gear device, but only needs to dismantle the limit mechanism, and the operation is simple and convenient. The invention can also effectively prevent the steel wire rope from slipping out, not only ensuring the position requirements of the parts in the working state, but also avoiding the inconvenient disassembly during the crane transfer process, improving the assembly efficiency, being convenient and feasible, and easy to popularize.

The invention relates to a cam conveying guide rail of a ring spinning frame for collectively doffing. The cam conveying guide rail (2) is fixed on a supporting foot (12) through a second bolt (11) and a positioning sleeve (13), a yarn tube (10) is sleeved on a cam (1) which is arranged in an open groove of the cam conveying guide rail (2), a supporting claw (3) is connected with a transmission rod (4) and the cam (1), the transmission rod (4) is connected with a pulley (5), the lower part of the cam conveying guide rail (2) is provided with a first bolt (8), the first bolt (8) is provided with the pulley (5), two sides of the pulley (5) are provided with a first shaft sleeve (6) and a second shaft sleeve (7), and the end head of the first bolt (8) is provided with a nut (9). The cam conveying guide rail (2) is made of aluminum alloy. The shape of the upper part of the cam conveying guide rail (2) is an oblong open groove, and the shape of the lower part of the cam conveying guide rail is two hollow oblong support plates, so the cam conveying guide rail has the advantages of difficult deformation and convenient installation.

The invention discloses an eccentric jacking positioning mechanism, which comprises a stepped-shaft-shaped upright post fixed on a bottom plate, wherein a positioning block is connected to the top end of the upright post; a positioning pin is suspended at the other end of the positioning block; a movable eccentric jacking block is arranged on the upright post, and is fixed through a fastening nut; the bottom of a workpiece guide rail is arranged on the upright post; the workpiece guide rail is jacked by the eccentric jacking block on one side, and clings to the positioning pin on the other side. According to the eccentric jacking positioning mechanism, the eccentric jacking block is fixed on the tool bottom plate through the fastening nut, one side of the workpiece guide rail is fixed by the positioning pin, the eccentric jacking block on the upright post is rotated to jack the workpiece guide rail, and the workpiece guide rail is welded after the fastening nut is tightened, so that the positioning and dimensional requirements of the workpiece guide rail are ensured, and production requirements are met.