Abstract: The present invention provides a seal ring structure, which comprises a seal ring member. The seal ring member includes a first ring opening on one side and a second ring opening on the other. A periphery of the first ring opening includes a plurality of leak grooves. When the seal ring member and the valve ball squeeze each other, the plurality of leak grooves can reduce the torque required to rotate the valve ball. A leak-groove length of the plurality of leak grooves is smaller than a seal-ring-member length of the seal ring member. The plurality of leak grooves do not penetrate the seal ring member for avoiding leakage of fluid.

Abstract: An online prediction method of tool-electrode consumption adapted for an electrical discharge machining (EDM) apparatus includes an experimental design; extracting electrode consumption variables from machining parameters of the electrical discharge machining (EDM) apparatus; and obtaining a correlation between the machining parameters and the electrode consumption variables through a correlation analysis to obtain a prediction model capable of predicting an effective contact area of a tool-electrode and a workpiece. In addition, a prediction method of machining accuracy is provided.

Abstract: A vacuum smelting device with mold-temperature control design includes: a chamber body and a cabin door, wherein the chamber body and the cabin door form a vacuum closed space; a smelting crucible disposed in the vacuum closed space for smelting raw materials to a molten metal; a casting mold also disposed in the vacuum closed space for accommodating the molten metal poured from the smelting crucible, and solidifying the molten metal to an as-cast alloy; and a mold-temperature control module surrounding the casting mold for controlling the temperature of the casting mold.

Abstract: A system for register operating space includes a first positioning mark, a local camera, a second positioning mark, a global camera and a computer system. The first positioning mark is set on a patient. The local camera captures a first image covering the first positioning mark. The second positioning mark is disposed on the local camera. The global camera captures a second image covering the second positioning mark. The focal length of the global camera is shorter than the focal length of the local camera. The computer system is communicatively connected to the local camera and the global camera to provide a navigation interface based on the first image and the second image.

Abstract: A temperature sensing device for a hot stamping die apparatus includes: a processor, wherein when a second die moves toward a first die to press a workpiece, a pushing signal is transmitted to the processor; at least one temperature sensing unit is disposed in the first die and includes: a moving rod, a buffer, and a temperature sensor; a displacement regulator; and a controller, whereby when the processor receives the pushing signal, the processor controls the displacement regulator through the controller, so that the moving rod drives the buffer and the temperature sensor to move a predetermined distance, and further the temperature sensor moves toward the workpiece to touch the workpiece and sense a temperature of the workpiece.

Abstract: A heat treatment method for a titanium-aluminum (TiAl) intermetallic includes the following steps: providing a TiAl intermetallic casting material; performing a first-stage heat treatment on the TiAl intermetallic casting material, where the TiAl intermetallic casting material is heated until a metallographic structure thereof is transformed into the ?+? phase, and is then cooled to room temperature to form a transitional casting material; and performing a second-stage heat treatment on the transitional casting material, where the transitional casting material is heated until a metallographic structure thereof is transformed into the ? single phase, and is then cooled to room temperature to form a TiAl intermetallic.

Abstract: A system for registering operating space includes a back bracing, a computer system and a robotic arm. The back bracing includes positioning marks which can be imaged in a computer tomography (CT) image, and the back bracing is used to be worn by a patient. The computer system computes image coordinates of the positioning marks in an image space. A base of the robotic arm is connected to the back bracing in an operating space after the CT image is generated. The robotic arm contacts the positioning marks in the operating space and meanwhile the computer system obtains arm coordinates of the robotic arm in an arm space. The computer system generates conversion models among the image space, the operating space, and the robot arm space according to the image coordinates and the arm coordinates.

Abstract: A multilayer plate with composite material and a method thereof are described. The multilayer plate includes an aluminum-based thin sheet and a composite material layer. The aluminum-based thin sheet includes a first passivation layer, an aluminum-based metal layer, and a second passivation layer sequentially. The aluminum-based thin sheet includes a first surface and a second surface opposite to the first surface. The first and second surfaces are set with micro holes. A diameter of the micro holes in the second surface is ranging from 0.5 ?m to 10 ?m. The composite material layer includes a thermoplastic polymer and a fiber material. The composite material layer has a third surface and a fourth surface opposite each other. The second surface is adjacent to or connected to the third surface. At least one portion of the thermoplastic polymer fills into the micro holes in the second surface.

Abstract: A method for manufacturing a metal object having a solid lubricating surface layer includes: providing a metal blank having a surface; providing a plurality of microparticles and solid lubricating powder, and mixing them together, wherein the microparticles have a hardness greater than that of the surface; and projecting the microparticles and the solid lubricating powder onto the surface, wherein the microparticles cause plastic flow on the surface to form a compressive stress layer, and the solid lubricating powder adheres to the compressive stress layer to form a solid lubricating surface layer.

Abstract: A titanium-aluminum intermetallic for improving casting fluidity includes the following elements in atomic percentage: Al: 40 at % to 50 at %, Cr: 1 at % to 8 at %, Nb: 1 at % to 8 at %, Mo: 1 at % to 5 at %, Mn: 1 at % to 6 at %, Ni+Si+Fe: 1 at % to 15 at %, B: 0.05 at % to 0.8 at %, and the balance of Ti and inevitable impurities. The titanium-aluminum intermetallic in the present disclosure has more adequate casting fluidity, that is, has better castability.

Abstract: An implant shredder includes a base and a cutting member. The base includes a first chamber and a second chamber intercommunicating with the first chamber. The first chamber includes an inlet. The second chamber includes an outlet. The cutting member is received in the second chamber. The cutting member is driven by a driving member to rotate. The cutting member includes a plurality of cutting edges located on a circumference of a same radius. The plurality of cutting edges is rotatably disposed adjacent to a location intercommunicating with the first chamber. An implant forming method includes creating data of an outline of an implant; producing a shaping mold based on the data; and cutting a to-be-processed object with the implant shredder, then mixing the to-be-proceed object with a biological tissue glue to obtain a raw material, and filling the raw material into the shaping mold to form the implant.

Abstract: A tangential flow filtration module includes plural plate units connected in sequence. Each of the plate units includes a main body, a first combing portion, a second combing portion, a first flange and a second flange. The main body has a first side surface, a second side surface and a through hole. The first side surface is opposite to the second side surface, and the through hole extends from the first side surface to the second side surface. The first combing portion and the second combing portion are disposed on the first side surface and the second side surface respectively. The first flange and the second flange respectively protrude from the first side surface and the second side surface and respectively. The first combing portion of one of the plate units is combined with the second combing portion of another one of the plate units, so that a sieving structure.

Abstract: A surgical robotic arm control system and a control method thereof are provided. The surgical robotic arm control system includes a surgical robotic arm, an image capturing unit, and a processor. The surgical robotic arm has multiple joint axes. The image capturing unit obtains a first image. The processor executes a spatial environment recognition module to generate a first environment information image, a first direction information image, and a first depth information image according to the first image. The processor executes a spatial environment image processing module to calculate path information according to the first environment information image, the first direction information image, and the first depth information image. The processor executes a robotic arm motion feedback module to operate the surgical robotic arm to move according to the path information.

Abstract: An automatic control method of a mechanical arm and an automatic control system are provided. The automatic control method includes the following steps: obtaining a color image and depth information corresponding to the color image through a depth camera; performing image space cutting processing and image rotation processing according to the color image and the depth information to generate a plurality of depth images; inputting the depth images into an environmental image recognition module such that the environmental image recognition module outputs a displacement coordinate parameter; and outputting the displacement coordinate parameter to a mechanical arm control module such that the mechanical arm control module controls the mechanical arm to move according to the displacement coordinate parameter.

Abstract: The disclosure provides an environment perception device and method of a mobile vehicle. The environment perception device includes a camera module, a LiDAR module, a database and a processing circuit. The camera module photographs a field near the mobile vehicle to generate a three-dimensional (3D) image frame. The LiDAR module scans the field to generate a 3D scanned frame. The processing circuit fuses the 3D image frame and the 3D scanned frame to generate 3D object information. The processing circuit compares the 3D object information with a 3D map in the database to determine whether an object is a static object. The processing circuit performs an analysis and calculation on the 3D object information to obtain movement characteristics of the object when the object is not the static object, and skips the analysis and calculation on the 3D object information when the object is the static object.

Abstract: A tool for a bone implant includes a rod and an adaptor. The rod includes a coupling portion having a through-hole. The rod further includes a measuring arm connected to the coupling portion and a force applying arm connected to the coupling portion. The measuring arm includes a first extension section having a first indicator portion, and the force applying arm includes a second extension section having a second indicator portion. The force applying arm is elastically deformable away from the measuring arm to displace the second extension section relative to the first extension section. The adaptor is coupled in the through-hole and includes an outer ring and an inner ring. The outer ring is rotatable relative to the inner ring in a single direction.

Abstract: A surgical robotic arm control system and a surgical robotic arm control method are provided. The surgical robotic arm control system includes a surgical robotic arm, a first image capturing unit, a second image capturing unit, and a processor. The first image capturing unit is used for obtaining a field image. The field image includes a first target image of a target object. The second image capturing unit is disposed at an end position of the surgical robotic arm and is used to obtain a second target image of the target object. The processor analyzes the field image to obtain robotic arm movement information, and controls the surgical robotic arm to move to approach the target object. The processor analyzes the target image to obtain robotic arm rotation information, and controls an angle and a posture of the surgical robotic arm.

Abstract: A mechanism for holding surgical instruments includes a carrier mounted on a machine tool and multiple holding modules mounted on the carrier. At least one of the holding modules is selected to be used during surgical operation. A swing element of the selected holding module enables a guidance sleeve to be swung to allow a guidance hole on the guidance sleeve to face toward a surgical operation region. The guidance sleeve is provided to hold one surgical instrument for surgical operation.

Abstract: A method for measuring a residual stress of a curved-surface bulk material includes steps of: locating a point at which a to-be-detected curved surface of a curved-surface bulk material has a highest curvature as a to-be-detected point; applying an instrument integrating an X-ray light resource and a detector, measuring the to-be-detected point by using an X-ray diffraction theory, and analyzing and calculating, in combination with a cos ? method, a strain value measured by using the instrument; and calculating, in combination with material property measurement data of the curved-surface bulk material, a curved-surface residual stress by introducing a curved-surface bulk material residual stress calculation model.