35results about How to "Solve the problem of difficult alignment" patented technology

An electronic device includes a flexible circuit board and a circuit board connected with it, which has two first weld parts, one multifunction open-end and a second positioning part. The first weld parts are parallel strips and in a line, the multifunction open-end is a strip having an anti-spill Sn part and a first positioning part. The anti-spill Sn part is set between the first weld parts and in a same length with them, the first part is connected with the first end of the anti-spill Sn part, said second part is set on the extension line of the multifunction open-end length direction and in a gap with its second end of the Sn part.

The invention provides an alignment mark recognition system, which uses the visible area of ​​the touch module to set a transparent alignment mark made of a phase delay material, and then passes through two polarizers so that the light receiver can effectively identify the alignment mark. The alignment procedure for graphics has improved the problem that there is no space to set the alignment mark in the border wiring area of ​​​​narrow bezel products.

The invention discloses a field-emission high-accuracy double-gate structure for reducing electron interception and an installation method thereof. The double-gate structure comprises a negative electrode substrate, a ceramic bottom plate, a negative electrode, a first gate net metal sheet, a second gate net metal sheet, a positive electrode plate, first ceramic posts, second ceramic posts and third ceramic posts, wherein the positive electrode plate is arranged on the ceramic bottom plate and is connected with the ceramic bottom plate via the two first ceramic posts, the first gate net metalsheet is arranged between the positive electrode plate and the ceramic bottom plate and is connected with the ceramic bottom plate via the two second ceramic posts, the second gate net metal sheet isarranged between the positive electrode plate and the first gate net metal sheet and is connected with the ceramic bottom plate via the two third ceramic posts, the first gate net metal sheet and thesecond gate net metal sheet are arranged in a cross way, positioning rods are arranged among the positioning holes, the negative electrode substrate is arranged at a central part of a bottom surface of the ceramic bottom plate, and the negative electrode penetrates through the ceramic bottom plate and is connected with the negative electrode substrate. By the double-gate structure, the problem ofdifficulty in alignment between a pattern negative electrode and a gate net hole can be solved, the alignment of a gate net can be substantially improved, and the transmittance of the gate net is improved.

The invention discloses a lifting device with a slidable and tiltable bracket, which includes a slewing bracket, a drive cylinder and a first lug, the lower end of the slewing bracket is hinged to the first support, and the drive cylinder The lower end is hinged to the second support, and the upper ends of the slewing bracket and the drive cylinder are both hinged to the first lug on which a bracket is slidably mounted. Its purpose is to provide a lifting device with a slidable and tiltable bracket, which can lift the erecting cylinder conveniently and quickly, and solve the problem of difficulty in aligning the erecting cylinder with the pin hole of the launch tube. Reduce labor intensity, improve efficiency, and significantly improve safety during operation.

The invention relates to a coal cutter hollow shaft machining method. The coal cutter hollow shaft machining method comprises the following machining steps that a coal cutter hollow shaft initial baris got to be machined into a spline small-diameter through hole, and a centre hole semi-finished product is machined; the left and right ends are subject to rough turning; taper faces are subject turning trimming; u-turning is carried out, one end is clamped by a chuck, the other end is fixed through a center support of a lathe, a center hole in the other end is formed through turning, and the taper face is formed through trimming; the left and right ends are subject to semi-finish turning; one end is clamped by the chuck, the other end is ejected by the center support, spline small diameter is formed through drilling, and spline end face angles are chamfered; a mandrel is installed, an iron core stopping part is subject to finish turning, and the left and right end are subject to finish turning; seventhly, the installed mandrel is hit to be tight, the right end and the left end are subject to finish turning, a hollow shaft of the inner taper face is matched with the grinding centre tobe installed on a grinding machine, and the hollow shaft is subject to grinding treatment. The invention further provides a grinding centre used for grinding the hollow shaft. By means of the methodand the grinding centre, coal cutter hollow shaft grinding operation can be conveniently and accurately carried out.