7results about How to "Prevent radial offset" patented technology

The utility model relates to a screw jack device for large -scale work piece support leveling, including support frame, screw rod, hand wheel, bracket and bolt, support frame whole presents the trapezoidal structure of little up big, is equipped with the mounting hole on the support frame, is equipped with the stop hole on the upper portion of mounting hole, hand wheel is installed in the stop hole, and can rotate relative to support frame, screw rod lower part passes in hand wheel and mounting hole in proper order, and is fixedly connected through trapezoidal thread and hand wheel screw thread cooperation, upper portion passes through bolt and bracket fixed connection, the utility model discloses through support frame adopts the trapezoidal structure of little up big, greatly enhanced the overall rigidity, effectively reduced the risk of falling when supporting large -scale work piece, provides the stable support foundation for large -scale work piece, guarantees the security of operation process, simultaneously through the trapezoidal thread cooperation of hand wheel and screw rod, single person can easily realize the lifting operation of screw rod, need not many people cooperation, significantly improves the operation efficiency, can satisfy the demand of large -scale work piece support leveling fast.

This utility model discloses a tooling fixture for machining automotive flanges, including a fixed support base, an electric rotating base, a clamping device, a limiting support column, and a limiting locking column. The electric rotating base is fixedly installed at the upper middle part of the fixed support base. The limiting support column and the clamping device are both mounted on a mounting plate on the upper rotating end of the electric rotating base. This utility model drives the limiting locking column to move up and down within the limiting support column by rotating a hexagonal prism-shaped first screw adjustment end. This allows it to adapt to flanges of different thicknesses, ensuring the bottom surface of the workpiece is stably supported and can be fully clamped and fixed by the clamping device. Each clamping device pushes the pressing and fixing end to move radially through a threaded adjustment rod. Combined with the sliding positioning of the sliding limiting frame on the limiting support base, it achieves the clamping of the outer edge of flanges of different diameters. The limiting locking column is inserted into the center hole of the flange to prevent radial displacement.

The utility model relates to the technical field of automobile production, and discloses a rigid support testing fixture assembly of an automobile front suspension spring, which comprises a base, a support column is fixedly connected to the rear side of the top of the base, a plurality of guide rails are fixedly connected to the front side of the support column, and guide blocks are slidably connected to the inner walls of the guide rails. The inner wall of the guide block is slidably connected to a plug pin, a positioning seat is fixedly connected to the front side of the top of the base, a plurality of positioning holes are formed in the top of the positioning seat, a positioning block is fixedly connected to the middle of the front side of the supporting column, and positioning feet are fixedly connected to the four corners of the bottom of the base. And screws are in threaded connection with four corners of the top of the base. According to the utility model, the front overhang spring to be measured is vertically placed in the positioning hole at the top of the positioning seat, then the top of the front overhang spring is positioned through the bolt, and the positioning block is used as an auxiliary positioning structure, so that the working efficiency is improved, and the application range is expanded.

The utility model relates to the field of transportation racks, and provides a transportation rack with good telescopic stability, which comprises a rack main body and at least one telescopic rack telescopically arranged on the rack main body, the rack main body is adjustably connected with the telescopic rack through a telescopic part, and the telescopic part comprises an outer pipe, an inner pipe and at least one fixing piece. The inner pipe and the outer pipe can be telescopically adjusted and fixed through a fixing piece, the inner pipe can be inserted into the outer pipe, the outer pipe is provided with at least one first positioning opening and at least one second positioning opening, a first positioning piece is installed on the first positioning opening, and the two ends, in the telescopic direction, of the first positioning piece abut against the first positioning opening; the first positioning piece can abut against the outer wall of the inner pipe, at least one first positioning hole is formed in the first positioning piece, and a fixing hole is formed in the inner pipe. The first positioning piece has the supporting and fixing effects on the inner pipe, radial deviation of the inner pipe and the outer pipe is prevented, and the technical problem that the telescopic material frame is prone to radial deviation is solved.

The invention provides a wire twister for heat tracing band production, and belongs to the technical field of heat tracing band production equipment. The wire twisting machine comprises a wire separating guide mechanism and a wire collecting and gathering mechanism which are sequentially arranged in the conveying direction of a heat tracing band, the wire separating guide mechanism is used for guiding a plurality of single wires to the wire collecting and gathering mechanism, and the wire collecting and gathering mechanism is used for gathering and twisting the plurality of single wires; the branching guide mechanism comprises a branching disc, a plurality of groups of threading holes are formed in the circumferential direction of the branching disc, a wire guide assembly is arranged in the branching disc, the wire guide assembly comprises two groups of limiting wire guide rollers, and the distance between the two groups of limiting wire guide rollers is adjustable so as to adapt to single wires with different diameters; the wire collecting and gathering mechanism comprises a gathering horn, wire anti-abrasion rollers and an oil storage pipe, a plurality of sets of wire anti-abrasion rollers are arranged in the circumferential direction of the gathering horn, and single wires are guided into the gathering horn through the wire anti-abrasion rollers. The invention particularly provides a wire twisting machine for heat tracing band production, which can ensure the wire twisting path of a single wire and avoid deviation and abrasion of the single wire.

The utility model belongs to the technical field of machining, and relates to a kind of inner tensioning spline mandrel device of spline sleeve outer circle processing, it include: spline mandrel, spline rack, base shaft;Spline mandrel is equipped with inclined groove, spline rack is slid in inclined groove, and spline rack is connected base shaft;The utility model provides tangential tension along circumference by spline rack along inclined groove sliding, so that the tooth side of spline tooth on spline rack and the tooth side of spline tooth on spline mandrel form opposite direction's force of action to the inner spline of spline sleeve, to tension spline sleeve, and therefore the utility model can improve the coaxiality of spline mandrel: by the synergistic effect of double-side spline tooth, realize even tensioning all around, effectively avoid radial deviation, improve the coaxiality after processing.

According to the rotary mechanical arm hole plugging equipment, transplanting and positioning are carried out through a mechanical arm, sucking, positioning and pressing-in of a plastic nail are integrated on one hole plugging device, the structure is simplified, and cost and occupied space are reduced; the plastic nail is directly ejected out through the ejector pin, and the plugging process is simplified; the multiple hole plugging mechanisms adsorb multiple plastic nails at a time, the moving frequency of the mechanical arm is reduced, and the plugging efficiency is improved.