37results about How to "Improve contact accuracy" patented technology

In order to enhance accuracy of determination as to whether an object has contacted a screen and to enhance accuracy of calculation of a coordinate position of the object, edges of an imaged image are detected by an edge detection circuit 76, and by using the edges, it is determined by a contact determination circuit 77 whether or not the object has contacted the screen. Moreover, in order to appropriately control sensitivity of optical sensors in response to external light, by a calibration circuit 93, a drive condition of the optical sensors is changed based on output values of the optical sensors, which are varied in response to the external light.

The invention discloses a low-speed high-torque and permanent-magnet synchronous high-speed automatic tool-changing electric spindle. The electric spindle comprises a motor body, and a stator, a rotor, a rotor shaft, a spring pre-tightening mechanism, a front bearing and a rear bearing are arranged inside the motor body. The electric spindle further comprises a connection base fixed to the rear end of the motor body, a connector fixedly connected to the connection base, a steam cylinder assembly fixedly connected to the connector, a rear cover arranged at the end of the steam cylinder assembly and a front end cover connected to the front end of the motor body. A tool loosening and pulling mechanism is arranged in the center of the rotor shaft, a pulling claw is arranged at the front end of the tool loosening and pulling mechanism, a disc spring assembly is installed in the middle of the tool loosening and pulling mechanism, a high-performance sensor is adopted together, and therefore automatic tool changing is more convenient and accurate and rapider. A magneto-electric coder is adopted at the rear end, so that low-speed torque output is more balanced. Compressed air is adopted for non-contact air sealing so that higher rotation speed can be obtained. The electric spindle is simple and compact in structure and powerful in function, is smaller than common electric spindles with the same power in size, has the advantages that the speed is low and the torque is high and can be widely applied to high-speed and low-speed precision machining of various materials.

A connector includes a housing and contacts. Each of the contacts includes a leading end, a connecting part, a held part, and a flange part. The housing has a holding part having a contact insertion hole into which the held part is inserted. The contact insertion hole includes: a first insertion hole in which a side surface of the held part of the contact is held; a second insertion hole formed in a size that holds one opposite side surface of the held part of the contact, and having a space on the other opposite side surface side, the second insertion hole being formed to be longer than the first insertion hole; and a flange holding part. The held part of the contact is made longer than the leading end of the contact. This configuration can improve alignment accuracy of the contacts without using a compensation plate.

The invention relates to a machining method for a worm gear tooth part. The machining method comprises the steps that S1, arc machining is conducted on the worm gear tooth part; S2, the half angles of hobs and the center distance between the center of each hob and the center of a worm gear are calculated; S3, rough hobbing is conducted on the worm gear tooth part; S4, semi-finish hobbing is conducted on the worm gear tooth part; S5, finish hobbing is conducted on the worm gear tooth part; S6, grinding is conducted on the worm gear tooth part. The step S3, the step S4, the step S5 and the step S6 are all performed on a gear hobbing machine, and the same datum plane is utilized; the worm gear hubs used for gear hobbing conducted on the worm gear tooth part in the step S3, the step S4 and the step S5 are large-diameter worm gear hobs. The machining method has the advantages that a machined worm gear is high in accuracy and stable in transmission, contacting surfaces are easy to match, gear teeth are good in abrasion resistance, and bending strength is high.

The invention discloses technique to improve the engagement accuracy of housing screw and nut of hoop rolling mill roughing mill and plate mill and particular fit to prepare screw and nut for multi-start screw thread of heavy mill. The invention needs equipment with simple structure, low cost, easy to operate and with perfect effect. The product (B520x48 P=24) with two pieces of screw thread 100% contact and Ra0.8 of surface roughness, and achieves international first-class standard.

A wafer container includes a container body, the internal of which is disposed with a plurality of slots for supporting a plurality of wafers and an opening is formed on one sidewall of which for importing and exporting said plurality of wafers, and a door with an outer surface and an inner surface, which is joined with opening of the container body with its inner surface for protecting the plurality of wafers in the container body, the characteristic in that: a recess is integrated with the inner surface of the door for separating the inner surface into two platforms, a restraint module is formed respectively on each of two platforms, and each restraint module includes a base which is disposed with a plurality of notches arranged at interval for contacting said plurality of wafers.

The invention discloses an automatic-centering center frame. The automatic-centering center frame is characterized by comprising a machine box, a driving device, a translation cam, an upper pressing rod assembly, a lower pressing rod assembly and pressing head assemblies. The translation cam is arranged in the machine box in a left-right sliding mode and driven by the driving device to move left and right. An upper pressing rod of the upper pressing rod assembly and a lower pressing rod are made to swing through the translation cam, so that the pressing head assemblies located on the upper pressing rod and the lower pressing rod and the pressing head assembly on the translation cam are gathered towards the axis of a workpiece to be machined at the same time, the workpiece to be machined issupported, a supporting wheel frame of each pressing head assembly can be automatically rotated according to the shape of the outer edge face of the workpiece to be machined, and it is ensured that two supporting wheels located on each supporting wheel frame are pressed on the workpiece to be machined at the same time.

The invention discloses an electric mechanical bearing bush grinding device and a bearing bush grinding method. According to the electric mechanical bearing bush grinding device, the four corners of abearing bush grinding base are correspondingly provided with lifting motors, each lifting motor is connected with a lifting supporting column, and lifting sleeves are arranged at the upper ends of the lifting supporting columns; the four lifting sleeves are connected end to end through two transverse rods and two longitudinal rods to form a square frame structure, longitudinal moving blocks are correspondingly arranged on the two longitudinal rods in a sleeving mode, the two longitudinal moving blocks are correspondingly provided with moving motors, and the two moving motors synchronously drive the two longitudinal moving blocks to move left and right on the longitudinal rods; the lower portions of the longitudinal moving blocks are correspondingly connected with lifting rods, a hobbing cutter shaft is installed at one ends of the two lifting rods through a rotating seat, and a hobbing cutter shaft gear is arranged at one end of the hobbing cutter shaft; a hobbing cutter shaft motor is arranged on one of the longitudinal moving blocks, a rotating shaft gear is arranged on a rotating shaft of the hobbing cutter shaft motor, and the rotating shaft gear is in transmission connectionwith the hobbing cutter shaft gear through a chain; and a bearing bush clamping table is arranged in the middle of the bearing bush grinding base and is used for clamping a bearing bush, and the hobbing shaft is provided with a hobbing cutter for performing grinding on the bearing bush.

The invention relates to a heat dissipation shell and a processing method thereof and a conduction heat dissipation module. The heat dissipation shell comprises a frame and a heat transfer bottom plate, wherein the heat transfer bottom plate is detachably installed on one side of the frame; the other side of the frame is fixedly connected with an extension part, and the extension part is used for fixing the PCB; at least one heat transfer boss is detachably mounted on one side, close to the frame, of the heat transfer bottom plate; and a PCB (Printed Circuit Board) and a chip are further included. The processing method of the heat dissipation shell comprises the steps that the frame, the heat transfer bottom plate and the cover plate are sequentially machined and formed, and the other side of the frame extends outwards to form the extension part; and the heat transfer bottom plate is detachably installed on one side of the frame, and a heat transfer boss is detachably installed on the side, close to the frame, of the heat transfer bottom plate, so that the heat dissipation shell is formed. The heat dissipation shell has the beneficial effects that the structure is simple, and the heat dissipation shell adopts a split design, so that the contact precision of the heat transfer boss and the chip is improved, the standardized processing production of a single component is realized, the processing efficiency is greatly improved, and the disassembly and assembly are convenient.

The invention relates to a heat dissipation shell and a processing method thereof and a conduction heat dissipation module. The heat dissipation shell comprises a frame and a heat transfer bottom plate, wherein the heat transfer bottom plate is detachably installed on one side of the frame; the other side of the frame is fixedly connected with an extension part, and the extension part is used for fixing the PCB; and at least one thickness-adjustable flexible heat transfer device is detachably mounted on one side, close to the frame, of the heat transfer bottom plate. The heat dissipation shell also comprises a PCB and a chip. The processing method of the heat dissipation shell comprises the steps that the frame, the heat transfer bottom plate and the cover plate are sequentially machined and formed, and the other side of the frame extends outwards to form the extension part; and the heat transfer bottom plate is detachably installed on one side of the frame, and the flexible heat transfer device is detachably installed on the side, close to the frame, of the heat transfer bottom plate, so that the heat dissipation shell is formed. The heat dissipation shell is simple in structure, and the heat dissipation shell is designed in a split mode, so that the contact precision of the flexible heat transfer device and the chip is improved, standardized machining and production of a single component are achieved, the machining efficiency is greatly improved, and disassembly and assembly are convenient.

The invention discloses a lightning protection device for a fan blade. The lightning protection device comprises a lightning arrester and a lightning arrester base. Wherein the lightning arrester comprises a connecting part, a lightning arresting part and a positioning part, the lightning arresting part is used for leading lightning, the surface of the connecting part is provided with external threads and used for being connected with the lightning arrester base, and the positioning part is arranged between the connecting part and the lightning arresting part, so that the positioning part can be matched with the shape of the concave part in the threaded hole after the connecting part is screwed into the threaded hole. The lightning arrester base is used for being connected with a lightning arrester and leading out lightning current received by the lightning arrester during lightning leading and comprises an insulating layer and at least one threaded hole, the insulating layer is arranged on the surface of the lightning arrester base, and the at least one threaded hole is formed in the base surface, facing a fan blade, of the lightning arrester base. The length direction of the threaded hole is perpendicular to the surface of the base, the threaded hole is matched with the external threads, and the end, close to the surface of the base, of the threaded hole is provided with a concave part matched with the positioning part in shape.

The invention discloses a method for improving the contact precision of pushing screws small end surfaces in a super nut and a gasket. The method specifically comprises the following steps of 1, a setof pushing screws to be machined are uniformly arranged in threaded holes in the periphery of a super nut before grinding, and a certain pre-tightening force is exerted on the pushing screws so as toprevent the pushing screws from loosening during grinding; 2, an external thread of a grinding tool is installed in the internal large threaded hole in the middle of the super nut with the pushing screws in the step 1 and is pre-tightened, enabling a small step surface of the grinding tool to be tightly attached to the bottom end surface of the super nut; and 3, a whole set of grinding tool to beground after being installed in the step 2 is placed on a workbench, so that the tool positioning surface of the grinding tool is sucked on a grinding machine sucking disc, a grinding machine wheel is used for carrying out unified grinding and machining on the small end surfaces of all the pushing screws, and until all the small end surfaces of the pushing screws are ground.

The invention relates to the technical field of grinding wheel machining application, in particular to a green silicon carbide grinding wheel-based machining process, which comprises the following steps of: (1) establishing a green silicon carbide grinding wheel finish machining database; (2) green silicon carbide grinding wheel machining parameters are selected from the database, and then a machining scheme is made; (3) processing the material according to the processing scheme; a green silicon carbide grinding wheel finish machining database is established, optimal green silicon carbide grinding wheel machining parameters are designed and selected, and the prepared polishing solution is added in the tough material machining process, so that the defects of technicians due to working experience, personal skills and detection equipment can be effectively reduced, and the machining efficiency is improved. The quality of the flatness and glossiness of the surface of the material cannot be guaranteed, the waste of raw materials is serious, and the polishing efficiency is low.

The invention provides a vehicle charging system, a charging pile and a vehicle. The vehicle charging system comprises a charging device, a positioning module and a displayer which are arranged on thevehicle, the positioning module is used for positioning a charging interface in the charging pile, the charging device is used for being in butt connection with the charging interface in the chargingpile, and the displayer is connected with the positioning module. According to the vehicle charging system, the relative position between the vehicle and the charging pile can be obtained in real time and is sent to a display screen, thus a driver controls and adjusts the position of the vehicle according to the relative position displayed on the display screen, the contact precision of butt connection between the charging pile and the vehicle is improved, single-person parking operation by the driver is achieved, the parking operation time is effectively shortened, and the butt connection efficiency of the vehicle and the charging pile is greatly improved.

The invention relates to a heat dissipation shell and a processing method thereof and a conduction heat dissipation module. The heat dissipation shell comprises a frame and a heat transfer bottom plate, wherein the heat transfer bottom plate is detachably installed on one side of the frame; the other side of the frame is fixedly connected with an extension part, and the extension part is used for fixing the PCB; and at least one flexible heat transfer device is detachably mounted on one side, close to the frame, of the heat transfer bottom plate. The heat dissipation shell also comprises a PCB and a chip. The processing method of the heat dissipation shell comprises the steps that the frame, the heat transfer bottom plate and the cover plate are sequentially machined and formed, and the other side of the frame extends outwards to form the extension part; and the heat transfer bottom plate is detachably installed on one side of the frame, and the flexible heat transfer device is detachably installed on the side, close to the frame, of the heat transfer bottom plate, so that the heat dissipation shell is formed. The heat dissipation shell is simple in structure; and the heat dissipation shell is designed in a split mode, so that the contact precision of the flexible heat transfer device and the chip is improved, standardized machining and production of a single component are achieved, the machining efficiency is greatly improved, and disassembly and assembly are convenient.

The invention provides a gear box redirection mechanism with a floating intermediate wheel. A set of self-aligning bearings is used for replacing two sets of tapered roller bearings in the prior art,inner rings of the self-aligning bearings sleeve an intermediate shaft in a movably matched mode, and outer rings are fixed to a center hole of the intermediate wheel. A plurality of elastic elementsare installed at the left end of the intermediate shaft to push the inner rings of the self-aligning bearings. The inner rings of the self-aligning bearings push rolling bodies of the self-aligning bearings, the rolling bodies push the outer rings of the self-aligning bearings, the intermediate wheel driven by the outer rings slides axially along the intermediate shaft, tooth surface of the intermediate wheel is always close to tooth surfaces of a first bevel gear and a second bevel gear, so that the intermediate wheel has a self-aligning floating function. According to the gear box redirection mechanism with the floating intermediate wheel, the contact area of the tooth surface of a transmission gear is increased, the contact accuracy is improved, and the service life of a gear is prolonged; the mechanism is novel and simple, the manufacturing cost is low, and the installation is convenient; the overall structure of an original gear box is not changed.