39results about How to "Affect positioning accuracy" patented technology

The invention relates to a coreless permanent magnet linear motor with a cooling structure, a manufacturing mould for a winding coil thereof and a machining process for the winding coil and belongs to the technical field of linear motors. The coreless permanent magnet linear motor with the cooling structure is used for solving the radiation problem of a coreless permanent magnet linear motor. Stators of the coreless permanent magnet linear motor with the cooling structure are mirror-symmetrically arranged at the two sides of a rotor, wherein the rotor comprises an armature winding and a cooling pipeline; the cooling pipeline is composed of an upper pipeline, a lower pipeline and two connectors; the upper pipeline passes through an arc-shaped through hole which is formed on the upper end part of the armature winding; and the lower pipeline passes through an arc-shaped through hole which is formed on the lower end part of the armature winding. The manufacturing mould for the winding coil of the coreless permanent magnet linear motor with the cooling structure is composed of two winding shape-fixing components, a coil dislocation moving component and two base plates. The machining process for the winding coil by using the manufacturing mould for the winding coil is used for realizing the dislocation of upper and lower coil edges of the winding coil and preventing a winding from falling into pieces. The machining process provided by the invention is suitable for the coreless permanent magnet linear motor.

The invention discloses a compound gantry milling machine which comprises a machine body and a working table, wherein a guide rail is arranged on the machine body; the working table is arranged on the guide rail and slides along the guide rail; framework-type vertical column structures are arranged on both sides of the machine body; a cross beam frame is arranged between the two vertical columns;a sliding seat is suspended on the cross beam frame; a milling and boring head capable of stretching longitudinally is arranged in the sliding seat; the vertical columns have hollow framework-type structures; guide rails are arranged on two sides, relative to the inner side surface, of each framework; a sliding saddle is arranged between the two sides of each framework; two sides of the sliding saddle are connected with the four guide rails arranged on the two sides of each framework in a sliding way; a ram is arranged in the sliding saddle; and a main shaft with a horizontal milling head is arranged in the ram. By the compound gantry milling machine, as the four guide rails arranged on the two vertical columns are used for supporting the weight of the sliding saddles and the rams, the positioning precision, the coaxiality and the whole rigidity of lateral machining of the compound gantry milling machine are improved; meanwhile, the milling and boring head arranged on the cross beam frame can machine the upper side of the side faces of a part, so the lateral machining precision is improved.

The invention discloses a linear optical fiber array. The optical fiber array comprises a baseboard, a cover plate, and several strands of bare optical fiber between the baseboard and the cover plate,wherein a coating is removed from the bare optical fiber, the cover plate comprises a silicon cover plate and a glass cover plate, and several trapezoidal grooves which are parallel, densely arrangedat equal intervals and are of the same structure are symmetrically formed in the lower surface of the silicon cover plate and the upper surface of the baseboard. The upper ends and the lower ends ofthe bare fiber are arranged in the corresponding trapezoidal grooves of the silicon cover plate and the baseboard respectively, and are in contact with the bottoms of the trapezoidal grooves. The bareoptical fiber in the trapezoidal grooves in the front end of the baseboard is pressed through the corresponding trapezoidal grooves of the silicon cover plate, and the bare optical fiber in the trapezoidal grooves in the rear end of the baseboard is pressed through the glass cover plate, and therefore each strand of bare optical fiber of the densely arranged optical fiber is jointly located by the corresponding trapezoidal groove and the adjacent optical fiber. By means of the linear optical fiber array, the problem that the precision of locating a fiber core in the optical fiber array utilized during linear image information transmission is solved, vertical offset errors and horizontal cumulative errors of the fiber core in the optical fiber array are avoided, and the linear optical fiber array has the advantages of being high in fiber core locating precision, simple in structure and easy to manufacture.

The invention discloses a T-connection line fault positioning method and system considering traveling wave velocity. The method comprises the steps: monitoring a detected power transmission line, uploading the signal information obtained through monitoring to a data acquisition card, enabling the data acquisition card to carry out A/D conversion on the acquired signal information and then synchronously transmitting the signal information to a main control computer; enabling the main control computer to store sampling information; carrying out phase-mode transformation processing on the signalinformation; determining the moment when the fault initial wave arrives at the measurement point; constructing a fault branch judgment matrix to find out a fault branch; calculating the traveling wavevelocity according to characteristics of a T-connection line, and calculating the position of a fault point by combining the traveling wave velocity with a double-end traveling wave distance measurement method principle. According to the method, the two parts are not influenced by the wave velocity of the traveling wave, the influence of the wave velocity of the traveling wave on fault positioning is eliminated, and meanwhile, the positioning precision is not influenced by the fault type and the transition resistance.

The invention discloses a negative-type milling blade comprising a blade body, wherein the blade body has an upper surface, a lower surface and a quadrangular peripheral surface and is also provided with a through hole and bosses around the through hole, and a main cutting edge and a smoothing edge are alternately arranged on the peripheral surface in sequence; the main cutting edge has a concave structure and gradually tilts close to opposite surfaces of the upper and lower surfaces from two ends respectively, and a non-tilting smooth middle part of the main cutting edge is formed at a position which is 1/6-1/3 of the length of the edge on the main cutting edge; and the front tool face of the non-tilting smooth middle part of the main cutting edge of the negative-type blade body is connected to the through hole perpendicular to the upper and lower surfaces by extending at a positive angle gently, and an open scrap accommodating groove leading to the through hole is formed at the bosses. According to the negative-type milling blade disclosed by the invention, by designing of the concave structure of the main cutting edge of the cutting blade and combining the design of a special opening structure groove at a bearing surface chip breaker groove of the blade, cutting force distribution and cutting flowing can be optimized, processing of self breaking scraps can be performed, and the processability and stability of a cutter are improved.

The invention discloses a single-cylinder driven dual-pressing-head reinforced clamp self-locking, removal and jacking mechanism which comprises a pressing arm I, a pressing arm II, a connecting plateI and a connecting plate II, wherein the connecting plate II is located on one side of the whole mechanism; the connecting plate I is arranged on one side of the connecting plate II; the pressing armI and the pressing arm II are arranged between the connecting plate II and the connecting plate I. The mechanism is scientific, reasonable, and safe and convenient to use, and solves the problems that a welding gun cannot complete consecutive welding at a time during welding production and local welding quality cannot be guaranteed since a clamping mechanism is large and complicated, and the positioning reliability and positioning strength are reduced since the mechanism is large in size and complicated to result in mutual negative effects when a pin pulling mechanism is matched with the clamping mechanism for use; an appearance of the mechanism adopts a square design; six surfaces can serve as mounting surfaces; the mechanism is flexible in actual use; and an application scope of the mechanism is enlarged.

The invention discloses an axis system based on a five-axis linkage processing center, and mainly solves the problems that a current five-axis linkage processing center is poor in performance, easy to damage processing parts, and the like. The axis system based on the five-axis linkage processing center comprises three linear axes, namely an X axis, a Y axis and a Z axis, a revolving axis, namely an A axis, a swinging axis, namely a B axis, wherein the B axis and the Y axis are distributed above a machine tool and are positioned above a processed part; the Y axis direction is perpendicular to the B axis swing direction; the B axis is used for driving a principal axis and a tool to swing; the Y axis is used for driving the principal axis and the tool to carry out front-rear linear motion; the X axis, the Z axis and the A axis are distributed below the machine tool; the A axis is used for driving the processed part to carry out revolving motion; the X axis is positioned below the processed part and is used for driving the processed part to carry out left-right linear motion in a horizontal direction; and the Z axis is used for driving the processed part to carry out up-down linear motion in a perpendicular direction. The axis system is reasonable in design, reliable in performance and suitable for being popularized and applied.

The invention discloses a free height adjusting mechanism for a student desk and chair. The free height adjusting mechanism comprises an upper casing pipe and a lower casing pipe; the upper end of theupper casing pipe is connected to the desk or the chair; the lower end of the lower casing pipe is connected to a table bottom foot or a chair bottom foot; the upper casing pipe is inserted into thelower casing pipe; a fixing base is arranged in the lower end of the upper casing pipe; a through pore, front sliding sheet holes, rear sliding sheet holes, a left through hole and a right through hole are formed in the fixing base; an adjusting plate is arranged in the through pore; vertical adjusting holes are formed in the adjusting plate; an intermediate plate is formed between the vertical adjusting holes; clamping grooves are formed in the two sides of the intermediate plate; lifting sliding sheets are arranged in the front sliding sheet holes and the rear sliding sheet holes; the upperends of the lifting sliding sheets are connected to sliding sheet driving devices; the two sides of the lifting sliding sheets are provided with straight surfaces; inclined grooves are formed in the two sides of the lifting sliding sheets; clamping pins are arranged in the left through hole and the right through hole; a front tension spring and a rear tension spring are connected between the leftclamping pin and the right clamping pin; the lifting sliding sheets penetrate through the position between the left clamping pin and the right clamping pin; and the clamping pins are matched with thestraight surfaces or the inclined grooves of the two sides of the lifting sliding sheets.

The invention provides a self-adaptive hoisting device of a skylight assembly production line. The self-adaptive hoisting device is characterized by comprising a tray, a hoisting mechanism and a return mechanism; the hoisting mechanism comprises a lifting air cylinder and a lifting platform, the lifting platform is fixed on the lifting air cylinder, and the lifting platform moves up and down along the lifting air cylinder; the tray is arranged on the lifting platform; the return mechanism comprises return air cylinders which are uniformly distributed on the periphery of the lifting air cylinder, located below the tray and used for applying a downward force to the tray. The self-adaptive hoisting device has advantages that a semi-finished product can be rapidly and self-adaptively positioned on a new workstation; the rapid fixation of the semi-finished product after being positioned on the new workstation can be facilitated. By simply improving the mechanical structure, rapid transportation of the skylight semi-finished product between a main production line and a curing production line can be realized; by adding a horizontal floating support, a vertical floating support and the like, the problem that the semi-finished product cannot be rapidly and self-adaptively positioned can be solved, a vibration attenuation effect also can be realized, the installation and assembling quality of the skylight can be greatly improved, and the production efficiency can be improved.

The invention provides a side-scan sonar system based on an unmanned ship and a side-scan sonar equipment data processing method, and belongs to the technical field of ships. The system comprises a shipborne side subsystem and a shore side subsystem; the shipborne side subsystem comprises an unmanned ship, and unmanned ship control equipment, side scan sonar equipment, an auxiliary sensor and a shipborne data processing server which are carried on the unmanned ship; the shore side subsystem is used for sending the sailing survey line to the shipborne side subsystem; the unmanned ship control equipment is used for controlling the unmanned ship to travel according to the navigation measuring line; the side-scan sonar equipment is used for carrying out seabed target measurement to obtain collected data; the auxiliary sensor is used for carrying out positioning and attitude acquisition on the unmanned ship to obtain positioning and attitude information; and the shipborne data processing server is used for carrying out seabed target coordinate conversion according to the positioning and attitude information, converting relative coordinates of the seabed target relative to the side-scan sonar equipment in the acquired data into coordinates in a world coordinate system and then storing the coordinates.

The invention discloses an efficient machining method for a thin-wall aluminum oxide ceramic structural part and a negative pressure clamp. The method comprises the steps that, the thin-wall aluminum oxide ceramic structural part is positioned, the bottom of the thin-wall aluminum oxide ceramic structural part is adsorbed to the negative-pressure clamp, and the side face or the outer arc-shaped face of the structural part is ground through a diamond grinding head; the thin-wall aluminum oxide ceramic structural part is positioned, the bottom of the thin-wall aluminum oxide ceramic structural part is adsorbed to the negative-pressure clamp, and a groove in the middle of the structural part is ground through a diamond grinding head; and the thin-wall aluminum oxide ceramic structural part is positioned, the bottom of the thin-wall aluminum oxide ceramic structural part is adsorbed to the negative-pressure clamp, and the small-diameter diamond grinding head continues to be used for grinding a through hole in the bottom of the groove in the middle. According to the characteristics of hardness, brittleness, wear resistance and thin-wall structure of an aluminum oxide ceramic material, a thin-wall structural part is positioned and clamped through the negative pressure clamp, then the outer edge and the middle groove are ground at a high speed under the high-strength condition, and finally the thin-wall through hole is ground at a relatively low-speed condition, so that the clamping efficiency and the machining efficiency are high, and moreover, the loss rate is low, the precision is high, and better machining quality can be obtained.

The invention discloses a novel dual-cavity tracheal catheter. The novel dual-cavity tracheal catheter comprises a main catheter, a branched catheter and a rotating tube. The rotating tube can axiallyrotate in the branched catheter so as to align a side vent in the wall of the rotating tube with a pipe orifice of a variant right upper lobe, so that ventilation of the right upper lobe is facilitated; the rotating tube is powered by compressed gas, the rotating tube is rotated by an elastic force of a spring resisting the internal pressure of the compressed gas, and because the elastic force ofthe spring is related to the length of the spring, the rotating tube can be positioned to a required angle by setting the pressure of the compressed gas. The novel dual-cavity tracheal catheter is simple in structure and convenient to use, can solve the ventilation problem of a patient suffering from right upper lobe variation and reduces the surgical risks of the patient.

The invention discloses an underwater open caisson neighboring anchor pile positioning method and structure. The underwater open caisson neighboring anchor pile positioning method and structure is characterized in that a front anchor pile located on the upstream face of an open caisson and a rear anchor pile located on the downstream face of the open caisson are arranged in an open caisson landingarea to allow the sinking of the open caisson to be performed in an area formed by the front anchor pile and the rear anchor pile in an enclosed manner, the distance between the front anchor pile andthe open caisson is 30-100cm, and the distance between the rear anchor pile and the open caisson is 30-100cm. The underwater open caisson neighboring anchor pile positioning method and structure hasthe advantages that the underwater open caisson neighboring anchor pile positioning method and structure is clear in force transmission structure, short in force transmission distance and the like; compared with a traditional remote anchorage pier positioning system, the underwater open caisson neighboring anchor pile positioning method and structure can evidently reduce the scale of an open caisson positioning system and save implementation cost; due to the fact that the front anchor pile and the rear anchor pile are close to the open caisson, the open caisson can be forcibly constrained to move along the water flow direction, open caisson deviation can be inhibited effectively, open caisson inclination risks are lowered, and open caisson positioning precision and mounting quality are increased.

The invention relates to a sawing device capable of being positioned, and belongs to the field of cutting saw devices. The problem that sectional material conveying efficiency is low is solved. The sawing device capable of being positioned comprises a sawing platform, a cutting device and a positioning device. The cutting device comprises a cutting tool, the cutting tool is correspondingly arranged above the sawing platform, the positioning device comprises an adjusting assembly, a positioning piece, a baffle and a first rotary shaft, a notch is formed in the positioning piece, the adjusting assembly is movably arranged on a cross beam, the positioning piece is fixed to the adjusting assembly, the baffle is arranged on one side of the positioning piece, the baffle is connected with the positioning piece through the first rotary shaft, a limiting groove is formed in the positioning piece, a groove is formed in the side wall of the limiting groove, a limiting block matched with the limiting groove is arranged on the baffle, a clamping block matched with the groove is arranged on the side wall of the limiting block, and an indicator lamp and a switch are also arranged on the baffle.

A dividing apparatus for an automatic notching press is proposed in which the drive is operatively connected directly, without a reduction gear unit, to the dividing device by means of a torque motor.