292results about How to "Guaranteed transmission accuracy" patented technology

The invention relates to a system for underground communication and staff monitoring based on a TD-LTE technology. The system comprises mobile terminals, a relay station, a communication base station, a location server, a switchboard, a core network device, host computers, and transmission lines. The mobile terminals and underground base station nodes and the location server are connected with each other through wireless interfaces, and trinity communication monitoring environment is formed. The switchboard gathers a plurality of underground base station nodes through optical fibers, and connects the gathered underground base station nodes with a ground base station. The ground base station accesses a public switched telephone network through the core network device. Main transmission channels of the system uses wired optical fibers. Wireless channel uses an orthogonal frequency-division multiple access technology and a multiple-input multiple-output modulation technology. An original underground monitoring positioning algorithm is improved by using a mixed measurement mode of signal transmits-receive time measurement and angular measurement. Information of underground staff positions is obtained by using a circle coordinate setting method. The improved system and algorithm effectively solves problems of difficulties of high quality communication and monitoring positioning under complex and harsh conditions in mines.

The invention provides a wheel track stepless regulation type omnibearing mobile platform truck chassis for industrial and agricultural transport. Modular design concept is adopted in the wheel track stepless regulation type omnibearing mobile platform truck chassis. The whole car chassis comprises four modules, structures of a module 1 and a module 2 are in a bilaterally symmetrical type, a module 3 and the module 1 are identical in structure, and a module 4 and the module 2 are identical in structure. The module 1, the module 2, the module 3 and the module 4 are connected through ball screws in sequence, and the module 4 is connected with the module 1 through another ball screw. In each module, a direct-current servo motor drives a small synchronous wheel to rotate, a synchronous cog belt transfers power to a large synchronous wheel to drive an axle to rotate, and Mecanum omnidirectional wheels are driven to rotate. By means of the wheel track stepless regulation type omnibearing mobile platform truck chassis, a platform truck can move forwards, move transversely and perform pivot steering, transport under the conditions of lack of space is achieved effectively, and stepless regulation can be performed on the wheel track of the platform car according to the width of the road and the volume of loads.

The present invention relates to cutting equipment and is especially one computerized efficient and high-precision wire electrode cutting machine. The cutting machine consists of frame, winding cylinder driven by one DC motor to rotate in either right direction or reverse direction, Z-axis bench, Y-axis bench, tension mechanism with one pair of tension wheels controlled by one pair of micro cylinders to support the cutting wire, oscillating mechanism with one pair of oscillating support wheels and fixture. The cutting machine is used mainly for cutting silicon wafer, quartz glass, ceramic, jewel, magnesia and other hard and fragile material.

The invention discloses a hinge machining host. The hinge machining host comprises a lathe bed, a control system and a hydraulic system; an automatic feeding device, a sawing device, a sawing compacting device, a punching device, a drilling device and a cutting device are arranged sequentially on the lathe bed along the feeding direction; the sawing device further comprises a front sawing device and a rear sawing device, the structure of the front sawing device is the same as the structure of the rear sawing device, the front and back sawing devices are arranged symmetrically front and back; a supporting device is arranged on the right side of the automatic feeding device; a service motor drives the feeding, the transmission precision is high; each station machines at the same time, the progresses are the same, and the machining efficiency is high. The invention further discloses a method for machining the hinge by the device disclosed by the invention; the method comprises the following steps: the feeding device compacts profiles and feeds; each station compacts the profiles; the sawing, punching, drilling and cutting devices machine the profiles at the same time; each station returns; the feeding device releases the profiles; the feeding device returns back to the initial position; the feeding device compacts the profiles again; each station looses the profiles; the feeding device feeds again; and then the next process is performed.

The invention discloses an equipment control method, a smart home system, a storage medium and computer equipment. The method comprises the following steps: when a control instruction is acquired, querying corresponding target terminal identification information in a pre-stored control information list according to area information in the control instruction, wherein the control information list includes terminal identification information of a first control terminal and a second control terminal as well as a corresponding relationship between the area information and equipment identificationinformation of controlled smart home equipment; and when the target terminal identification information is not the terminal identification information of the first control terminal, sending the control instruction to a target control terminal corresponding to the target terminal identification information to ensure that the target control terminal executes the control instruction. The smart home equipment in each area can be controlled by the first control terminal, and thus the management of the smart home equipment can be facilitated.

The invention discloses a novel harmonic speed reducer of a wave generator. The inner surface of a circular rigid wheel is provided with rigid internal teeth; a wave generator is arranged in the circular rigid wheel; the wave generator consists of an oval rigid cam and a flexible bearing embedded into the outer ring of the rigid cam; a flexible wheel is sleeved on the outer circle of the bearing of the wave generator; the outer surface of the flexible wheel is provided with outer teeth which are matched with the inner teeth of the circular rigid wheel; the flexible wheel and a circular rigid gear are configured coaxially; the wave generator is driven by a motor, and is taken as a rotary driving source; and the shape curve of the wave generator cam has a specific expression. According to the novel harmonic speed reducer, the specific expression of the shape curve of the wave generator cam is provided, and the flexible wheel and the rigid wheel are better meshed via the wave generator, so that the stress distribution on a meshed tooth surface between the flexible bearing and the gear is improved, and the bottom stress of the flexible gear is reduced.

The invention discloses a portable spliced guide rail, a butt joint method and a work fixture. The spliced guide rail is divided into a base section part, an extension section and a tail section which are mutually in butt joint along a cross section direction, wherein butt joint faces are connected in a mutual intersection manner, so that the defects of poor butt-joint stability, low connection strength and difficult in precision guarantee on the same horizontal plane are avoided. On the butt joint faces of a guide rail body, two pairs of positioning pins and positioning holes are adopted, sothat the positioning is accurate and the positional connection is reliable; guide posts and guide faces are mutually matched so that the splicing accuracy is enhanced; and auxiliary dowel shafts are used for fixed connection so that the structural stability and the integrity of the spliced guide rail are ensured, and the specially designed work fixture ensures that the butt joint process of the guide rail is more accurate and easier to operate. The entire spliced guide rail has a simple structure, is convenient for butt joint, and can be dismounted and assembled without professional personnel, and the extended guide rail is beneficial to enlargement of an applicable range for product processing and is suitable for popularization and application in various industries and fields.

The invention discloses a multichannel transmission system of millimeter-wave signals. The multichannel transmission system of the millimeter-wave signals comprises a transmitting module, a receiving module, a local oscillator module, a transmitting switch module, and a receiving switch module. The transmitting module is used for being connected with a transmitting end of transmitting antennas, and the transmitting module is used for sending transmitting signals through the transmitting antennas. The receiving module is used for being connected with a receiving end of receiving antennas, and the receiving module is used for receiving the transmitting signals sent by the transmitting module and changing the transmitting signals into intermediate frequency signals. The local oscillator module is connected with the transmitting module and the receiving module, and the local oscillator module is used for providing local oscillator signals for the transmitting module and the receiving module. The transmitting switch module is connected with the transmitting module, and the transmitting switch module is used for controlling the number of transmitting channels of the transmitting signals sent by the transmitting module. The receiving switch module is connected with the receiving module, and the receiving switch module is used for controlling the number of receiving channels of receiving signals received by the receiving module. Signals transmitting numbers and signals receiving numbers are controlled accurately, so transmitting accuracy of signals is guaranteed.

The invention relates to the field of machine manufacturing equipment, in particular to an efficient complete machine structure for a horizontal machining center and a manufacturing method thereof, and belongs to the design of a numerically controlled machining center of a machine tool and manufacturing technique. The complete machine structure comprises a lathe bed, a column, a headstock, a tool magazine and the like, wherein backwater holes are formed in the declined surface of the rigidity lathe bed; the gantry framework type column which moves horizontally on the lathe bed adopts a *-shaped rib arrangement; a motor directly connected ZF reduction gearbox on a headstock which moves vertically on the column transmits power to a spindle through the belt; a loosely clamped knife adopts a gas-liquid conversion pressurized cylinder; a swivel table that moves along the lathe bed forwards and backwards adopts a modularized design; a variable-frequency ATC (Air Traffic Control) at the left side of the lathe bed is in rigid connection with a square tool magazine body; an L-shaped electrical cabinet is arranged at the right side of the lathe bed; a structure of combing a large-flow cutting fluid fling mechanism with a chain plate chip cleaner is adopted in the middle of the lathe bed; a function setting interface, a maintenance plan function and an energy saving function are possessed. The structure provided by the invention solves the problems that a common horizontal machining center is large in size, high in energy consumption, complex in maintenance in the prior art.

The invention relates to a claw rod mechanism of a forging manipulator, which mainly comprises a jaw clamping mechanism and a claw arm rotating mechanism, wherein the jaw clamping mechanism comprises a claw arm (1), a connecting rod (2), a hydraulic piston cylinder (8), a piston rod (9), a thrust bearing A (12), a thrust bearing B (13), a connecting piece (14), a claw shell B (18), a pin A (19), a pin B (20) and a jaw (21); and the claw arm rotating mechanism mainly comprises a deep groove ball bearing (3), a claw shell A (4), a synchronous belt (5), a small belt wheel (6), a rotary driver (7), a claw shell C (10), a large belt wheel (11), the thrust bearing A (12), the thrust bearing B (13), the connecting piece (14), a rotating body (15), a guiding key (16) and a barrel sleeve (17). The claw rod mechanism of the forging manipulator has the advantages of a simple structure, a regular shape of each member and being easy in manufacturing and disassembly; and the piston rod and the oil cylinder have no torque loads so that the claw rod mechanism is high in structural reliability.

The invention discloses a rigid-flexible composite filtering gear which comprises an outer gear ring and a hub sleeved with the outer gear ring in a clearance fit way, wherein elastic body filling holes I are annularly and uniformly distributed between the outer gear ring and the hub; high-damping elastic bodies I are arranged in the elastic body filling holes I. The invention further discloses a rigid-flexible composite filtering gear which comprises an inner gear ring and a gear seat sleevingthe inner gear ring in the clearance fit way, wherein gear teeth are arranged on the inner peripheral wall of the inner gear ring; elastic body filling holes II are annularly and uniformly distributed between the inner gear ring and the gear seat; high-damping elastic bodies II are arranged in the elastic body filling holes II. The invention further discloses a rigid-flexible composite filtering gear meshing pair which comprises two mutually-meshed gears, wherein the two gears are both outer gears, and at least one of the two gears is an outer rigid-flexible composite filtering gear; or, one gear is an outer gear, and the other gear is an inner gear; the outer gear is an outer rigid-flexible composite filtering gear and/or the inner gear is an inner rigid-flexible composite filtering gear.

The invention relates to a truss manipulator for loading and unloading. The truss manipulator for loading and unloading is composed of a support structure, a horizontal movement assembly, a vertical movement assembly, an automatic handgrip, and a transition connection plate between two shafts, wherein the horizontal movement assembly is fixedly installed at the top end of the support structure; the vertical movement assembly runs on the horizontal movement assembly; and the automatic handgrip is installed at the bottom end of the vertical movement assembly. According to the invention, a single-vertical-column supporting main body structure is adopted, and reinforcing ribs are designed and used for improving the strength and the rigidity of the truss main body structure; and transmission in a horizontal movement is realized in a manner of matching a V-shaped slide rail with independent gear and rack, each of the gear and the rack is provided with modulo-two oblique teeth with an accuracy class of 6, the transmission manner can greatly meet requirements on a high speed, and the transmission accuracy can be controlled to be less than 0.1mm.

The invention discloses an integrated machining method of a planet carrier of a robot RV reducer, and belongs to the technical field of robot RV reducer machining. The method comprises the steps as follows: forging a first casing and a second casing, and performing hot extrusion on the first casing and the second casing respectively; performing thermal refining; performing tempering; performing finish machining on end surfaces respectively; connecting the first casing with the second casing to be clamped to a clamp, and performing finish machining on inner holes formed in the first casing and the second casing with a center of gyration serving as a locating basis; performing finish machining on outer surface with the locating basis; directly machining inner rings of rolling bearings on the first casing and the second casing; accurately grinding an outer track on each inner ring simultaneously; and performing finish machining bearing positions of three tapered roller bearings on the first casing and the second casing with the location reference, and directly machining outer rings of the tapered roller bearings. With the adoption of the method, the mounting accuracy, the manufacturing accuracy and the transmission accuracy are ensured, the requirement for high accuracy is met, the service life is prolonged, machining and assembling errors and accumulative errors are reduced, the output torque is increased, and the machining cost is effectively reduced.

The invention discloses a three-dimensional soft model cutting forming machine and a three-dimensional soft model cutting forming method using the forming machine to achieve high efficiency machining, wherein the three-dimensional soft model cutting forming machine is compact in structure, and smooth and fast to machine. The forming machine comprises a base, a stand column, a fixed cantilever, a movable cantilever, an angle cutter head base and a cutter head body. The stand column is installed on the base through a first guide drive mechanism and can reciprocate along the horizontal X axis, the fixed cantilever is installed on the stand column through a second guide drive mechanism and can reciprocate along the horizontal Y axis, the angle cutter head base is installed at the front end of the movable cantilever through a fourth guide drive mechanism and can swing in the two directions around a first reference axis parallel to the horizontal Y axis under the action of the fourth guide drive mechanism, and the cutter head body is installed on the angle cutter head base through a fifth guide drive mechanism and can swing in the two directions around a second reference axis perpendicular to the first reference axis under the action of the fifth guide drive mechanism.

The invention relates to mechanical arm joints, in particular to a modularized ball joint of a collaborative robot. The modularized ball joint of the collaborative robot comprises a shell and ball joint driving modules. A module supporting piece is fixedly installed on the shell, and a spherical shell cover is further installed on the shell. A first installation position and a second installation position are arranged on the module supporting piece, and the ball joint driving modules are fixedly installed on the first installation position and the second installation position and installed inside the shell in a sealing mode through the spherical shell cover. The modularized ball joint of the collaborative robot has the advantages that in the aspect of driving, hollow motors are used for driving, deceleration is conducted through harmonic speed reducers, and therefore high-torque transmission is achieved, the transmission accuracy is guaranteed, and the structure is compact and light; and in the aspect of braking, synchronous belt pulleys are utilized to conduct transmission, and therefore the driving portion and the braking portion are isolated, the space is saved, the braking performance is guaranteed, and the installation difficulty of the interior of the joint is reduced.

The invention discloses an automatic 3D film attaching device for a mobile phone and belongs to the field of packaging equipment. The automatic 3D film attaching device for the mobile phone comprises a rack, a material releasing disc assembly, a material collecting disc assembly, a servo motor traction film assembly, a material belt tension control wheel assembly, a film pressing head assembly, a laser film cutting assembly, a CCD detection assembly and film attaching rotating assemblies. The material belt tension control wheel assembly and the film pressing head assembly in the automatic 3D film attaching device for the mobile phone are driven by a servo motor, and the material releasing length and the material releasing speed are effectively controlled; in the material belt conveying process, the material belt tension control wheel assembly can ensure that the tension of a material belt is in the needed range; and due to an above driving mechanism and an above process control system, the conveying precision and quality of the material belt can be effectively ensured, the conveying precision of the material belt is +/-0.1 mm, and the control precision of tension is +/-20 g.

A technology for machining the involute gear is disclosed. When the tooth top line of standard rack bar tool is tangent with the base circle of gear to be machined, it is an extreme position of advancing tool. When it is said extreme position, the crossing point between said tooth top line and the engaging line is the extreme engaging point. When said tooth top line is advanced to the extreme engaging point, the minimal number of the teeth on the gear is 33.16. When the number of the teeth on the gear is less than 33.16, the rack bar tool moves is the base circle of the gear of machine the involute gear.