75results about How to "Axial positioning is accurate" patented technology

The invention provides a mandrel component; the mandrel component comprises a mandrel body, an operating rod, an outer sleeve, a positioning sleeve and a dismounting sleeve; the mandrel body is placed in a workpiece hole and comprises a mandrel, a movable core sleeve, a plurality of centering expanding-tightening blocks, an elastic ring, two stop pins and a push-pull sleeve; the operating rod is arranged in the push-pull sleeve in a penetrating manner and is provided with a convex part at the front end; the outer sleeve is arranged on the operating rod in a sleeving manner; the positioning sleeve is of a cylinder and is arranged on the operating rod in the sleeving manner; the dismounting sleeve is of a cylinder and is arranged on the operating rod in the sleeving manner; the rear end of the dismounting sleeve is jointed with the front end of the outer sleeve, so that the dismounting sleeve can rotate by being driven by the outer sleeve when the outer sleeve rotates; the dismounting sleeve is provided with two wedge blocks located at the front end, being wedge-shaped, extending circumferentially and being spaced; the narrow end of one wedge block is adjacent to the wide end of the other wedge block; each of the wedge blocks, along the axial front surface or the axial rear surface, contacts the corresponding stop pin. Therefore, the mandrel component when being installed can be positioned accurately and axially, and the inner wall of the workpiece hole is not damaged in dismounting process.

The present invention relates to an actuating drive which includes an electric motor (2) and a gearing arranged in a housing (1) which is open on one side and which is closed by a cover. The electric motor (2) is mounted in a recess bulge (1a) of the housing (1) which is substantially sealed off from the gearing. The configuration provides a precise positioning of the electric motor (2) relative to a first axle (3), wherein a first gear of the gearing is assigned to the same and wherein the actuating drive can be manufactured more simply and more cost-effectively than was previously possible. This is achieved in that the electric motor (2) is attached indirectly to the housing (1) by means of an accordingly shaped metal sheet (4), and is positioned in a predetermined location with no radial or axial play.

The invention relates to a novel vacuum-absorbable adjusting table for milling and grinding. From the perspective of improving the positioning accuracy of the workpiece in the milling process, a vacuum adsorption adjustment table is designed. On the premise of ensuring the vacuum adsorption force, it realizes the fine adjustment of the angle of the milling and grinding components, and can ensure the diameter of components with different calibers. to precise positioning. The adjustment table can be conveniently worked on the milling machine, replacing the general-purpose vacuum adsorption fixture; adding an adjustable and controllable angle adjustment degree of freedom for the initial milling position of the workpiece, and compensating for the process of vacuum adsorption (especially the O-shaped seal The axial uneven deformation of the ring) improves the positioning accuracy of milling and further ensures the milling accuracy. The invention can achieve high-precision repeated positioning of optical components, which is conducive to exploring the influence of milling process parameters on the milling process, and the milling of optical components with special requirements such as parallelism, concentricity, and edge thickness difference. There are huge advantages in application.

The invention discloses a large-stroke, rapid and accurate linear feeding production line, and belongs to the technical field of servo positioning control. Two parallel linear guide rails are installed on a tool body, and a rack is fixed on the inner side of one of the linear guide rails; linear sliding blocks are slidably installed on the linear guide rails, and a sliding plate is fixedly connected to the two linear sliding blocks; a servo motor is installed on the sliding plate, and the servo motor is connected with the rack through a transmission mechanism; an automatic lubricating device is further installed on the sliding plate; and two ends of the tool body are provided with adjustable tug mechanisms respectively. According to the linear feeding production line, when the sliding plate works every time, a mechanical zero point serves as a reference, so that the accumulative error is avoided, and rapid and accurate positioning is realized; a gear, the rack, linear guide rails and aplanetary gear are adopted, so that large rigidity power is provided for the production line, and axial positioning can be accurately realized; and the automatic lubricating device provides continuous lubricating oil for the gear, racks, the linear guide rails and the like, so that the service life is greatly prolonged.

The invention discloses a stud welding gun, which comprises a gun shell and an end cover group arranged on the gun shell, wherein the end cover group comprises two aluminum sleeves and a positioning ring, the aluminum sleeve positioned at the rear end of the end cover group is clamped with the gun shell, the aluminum sleeve positioned at the front end of the end cover group is connected with the positioning ring through screw threads, two guide rods parallel to the axis of an electric conduction shaft are arranged on the aluminum sleeve positioned at the rear end of the end cover group, the aluminum sleeve positioned at the front end of the end cover group can be arranged on the guide rods in a relatively sliding mode, the gun shell and the aluminum sleeve positioned at the rear end of the end cover group constitute a cavity, the electric conduction shaft, a connecting body, an insulation sleeve, a male connection sleeve and a female connection sleeve are arranged in the cavity, the front end of the electric conduction shaft is provided with an electric conduction chuck, the rear end of the electric conduction shaft, the connecting body, the insulation sleeve and the front end of the male connection sleeve are sequentially connected, the rear end of the male connection sleeve is provided with an armature, the female connection sleeve is fixed on the gun shell and is sleeved onthe armature in a relatively sliding mode, and an electrification coil is arranged in the female connection sleeve. When the electrification coil is electrified, the male connection sleeve is lifted to slide to the female connection sleeve, and when the electrification coil is powered off, the male connection sleeve falls down to be far away from the female connection sleeve.

The invention provides an embedded root flange device for a fan blade. The device comprises an upper half flange, a lower half flange, an upper half mold and a lower half mold, wherein the upper half flange is mounted on the upper half mold by the aid of iron feet, side connecting bolts, bottom foot connecting bolts and root end connecting bolts, the lower half flange is mounted on the lower half mold by the aid of iron feet, side connecting bolts and root end connecting bolts, and after the upper half mold and the lower half mold are closed, the upper half flange and the lower half flange are locked by locking devices to form a complete root flange; first round holes and first kidney-shaped holes are pairwise formed in the upper half flange and the lower half flange, one side connecting bolt penetrates through one first round hole, and the other side connecting bolt penetrates through one first kidney-shaped hole. The device has the advantages of high positioning precision and convenience in dismounting.