35results about How to "Guaranteed to be perpendicular to each other" patented technology

The invention discloses a liquid observation mirror. The liquid observation mirror comprises a mirror body, an indicator retainer, a central spindle and a spring, wherein the mirror body is provided with an internal chamber as well as a liquid inlet and a liquid outlet which are communicated with the internal chamber, the indicator retainer is arranged in the internal chamber of the mirror body, the central spindle is in threaded connection with the bottom wall of the internal chamber of the mirror body, the upper end face of the central spindle is provided with an axial hole, the spring is inserted in the axial hole of the central spindle, and the upper end face of the spring butts against the indicator retainer. Compared with the prior art, the liquid observation mirror has the advantages of simple and reliable structure since the central spindle is in threaded connection with the mirror body; on the premise of maintaining the stable position relation between the central spindle and the mirror body, the assembly manufacturability is improved greatly, and the production cost of the product is effectively controlled further.

An embodiment of the present invention provides a method for manufacturing semiconductor fins and a method for manufacturing FinFET devices. The method for manufacturing semiconductor fins includes: providing a substrate; selectively epitaxially growing a first a mask layer; using the first mask layer as a mask to selectively epitaxially grow a first epitaxial layer on the substrate; using the first epitaxial layer as a mask to remove all part of the substrate at the bottom of the first mask layer and the first mask layer, so as to form fins at the bottom of the first epitaxial layer. Through the above scheme, the combination of selective epitaxial growth and anisotropic etching process can ensure that the surfaces of the semiconductor fins and the gate oxide layer are perpendicular to each other without using photolithography technology, and reduce the surface roughness of the semiconductor fins degree, forming fin rays with smooth sides.

The invention belongs to the technical field of building material product detection, and particularly relates to a tapestry brick bonding strength sample cutting device. The tapestry brick bonding strength sample cutting device comprises a cutting saw. The cutting saw is fixedly connected with the left end of a telescopic shaft of a horizontal telescopic shaft motor A through a bolt. A coupling is fixed to the right end of a shell of the horizontal telescopic shaft motor A. The right end of the coupling is connected with a pressure ring sensor. The pressure ring sensor is mounted at the end of a hollow shaft motor. The lower end of the hollow shaft motor and a vertical telescopic shaft motor are fixedly connected together. The vertical telescopic shaft motor and the other horizontal telescopic shaft motor B are fixedly connected together. The horizontal telescopic shaft motor B is fixed to a support. The support is fixed to a bottom disc of a cage. The cutting saw, the horizontal telescopic shaft motor A, the pressure ring sensor, the hollow shaft motor, the vertical telescopic shaft motor and the horizontal telescopic shaft motor B are all connected with a PLC.

The invention discloses automatic arc-forming equipment for a tube and an arc-forming method of the automatic arc-forming equipment. The equipment comprises a fixed ring, wherein a plurality of arc-forming mechanisms are peripherally arranged on the outer part of the fixed ring; an arc-forming grinding head is rotatably arranged inside the fixed ring; and each arc-forming mechanism comprises a slide steering assembly, a transport assembly and an unloading assembly. The arc-forming method comprises the following steps of: inserting one end of a tube to be subjected to arc-forming into a limiting hole in the fixed ring; rotating the arc-forming grinding head, slowly extending out a slide cylinder, and performing arc-forming processing on one end of the tube through an arc surface grinding layer on the arc-forming grinding head; moving the tube out of the fixed ring, rotating a rotary cylinder by 180 degrees, inserting one end of the tube into a locking sleeve of a clamping hole, and rotating the rotary cylinder by 90 degrees; extending out the slide cylinder, pushing the other end of the tube into the fixed ring, and performing arc-forming processing on the other end of the tube; retracting the slide cylinder, re-moving a clamping part to one end of the tube, moving the tube to an inlet of an unloading channel, electrifying a second electromagnet, and dropping the tube into an unloading box through an unloading channel.

The invention discloses an arc punching device for both ends of a circular tube and an arc punching method thereof. The arc punching device comprises an arc punching seat, a feeding rotating mechanism, and a pulling arc-punching mechanism; and a limiting sleeve is arranged in the arc punching seat, the feeding rotating mechanism comprises a base, a rotating cylinder, a connecting block, a roller,a spring, and a rotating cam, the pulling arc-punching mechanism comprises a cylinder body, an arc punching rod rotatably arranged in the arc punching seat, and a rotor and blades are arranged in thecylinder body. The arc punching method comprises the following steps that a pipe fitting is clamped and limited in a clamping mechanism, the rotating cam rotates, and one end of the pipe fitting is inserted into the limiting sleeve of the arc punching seat; the cylinder body is fed with oil, the rotor drives the arc punching rod to swing, and one side of one end of the pipe fitting is arc-punchedby cutters; the cylinder body is fed with oil in the backward direction, and the other side of one end of the pipe fitting is arc-punched by the cutters; and the feeding rotating mechanism exits, a rotating motor dives a worm to rotate, the worm drives a turbine ring to rotate by 90 degrees, the rotating cylinder drives the pipe fitting to overturn by 180 degrees, and the other end of the pipe fitting is arc-punched.

The invention discloses a method for improving sectioning base ring opening precision. According to different points of the method from a conventional technology, for perpendicularity after sectioningbase ring joint close face machining, a steel wire is hoisted to check various parts of the joint close face, a numerical control program is utilized for correcting joint close face perpendicularitydeviation, and precision of the joint close face is guaranteed; 1 / 2 of a base ring is machined on a boring machine, boring machine stroke precision is utilized, a digital level gage is placed on a boring box, fixed guide vane opening measuring in the whole 1 / 2 base ring stroke is achieved, and precision of base ring 1 / 2 datum lineation is guaranteed; a 360-degree rotation center column is utilizedin the integral base ring for measuring and datum lineation and checking, datum uniformity of the integral base ring is guaranteed, and the datum lineation and checking precision is improved; sectioning base ring datum plane machining and combining are conducted, the sectioning base ring is assembled and combined with the datum plane as the reference, and the assembling and combining precision isimproved. The method has the advantages that the base ring opening size control technology is simple, the machining quality is controllable, and precision is high.