1196results about How to "Guaranteed assembly accuracy" patented technology

The invention discloses a floating auxiliary roller type overrun clutch which comprises an outer ring, an inner ring, rolling bodies and auxiliary rollers, wherein engagement spaces used for being engaged with or separated from the rolling bodies are formed between the outer ring and the inner ring; the auxiliary rollers are parallel to an axial line of the overrun clutch and are spaced from the rolling bodies; and the auxiliary rollers are arranged between the rolling bodies in such a way that the auxiliary rollers can move in a circumferential direction of the overrun clutch. According to the floating auxiliary roller type overrun clutch, the processing of a limiting seat is avoided, the processing process is simplified, the working efficiency is improved, and the processing cost is reduced; as the auxiliary roller structure is adopted, the axial length of the overrun clutch and the rolling bodies can be theoretically infinitely prolonged, the engagement length is prolonged, the bearing capacity of the overrun clutch is increased, the radial size of the overrun clutch under higher bearing capacity is reduced, and the service life of the overrun clutch is prolonged; and meanwhile, the probability of imbalance caused by application of a pretension force to point contact of each roller in the prior art is removed, thereby enabling each roller to keep parallel to the axial line of the inner ring.

A pressing machine for a liner comprises a programmable logic controller (PLC) control system, a frame, a clamping mechanism, a plugging mechanism, a feeding mechanism, a pushing mechanism and a pressing mechanism. The clamping mechanism is arranged on the upper portion of the frame. A working platform is arranged on the lower portion of the frame. The plugging mechanism is fixedly arranged on the lower end surface of the working platform and corresponding to a positioning hole of the working platform. The pushing mechanism is arranged on a pressing plate of the clamping mechanism. The pressing plate is provided with a transversal linear slide. The feeding mechanism and the pressing mechanism are matched and respectively connected with the pushing mechanism through a mounting plate. The clamping mechanism, the plugging mechanism, the feeding mechanism, the pushing mechanism and the pressing mechanism are all controlled by the PLC control system. The pressing machine is adaptable to assembling of the liner of an oil pump cylinder body of an engine, and capable of realizing automatic operation, improving working efficiency, reducing labor intensity and improving products quality.

An LED (light-emitting diode) light source upper beam and lower beam integrated automobile lamp module is characterized in that an upper beam LED circuit board (5) and a lower beam LED circuit board (8) are arranged behind a condenser 1 respectively, and a reflection mirror comprises a first grade reflection mirror (10) and a second grade reflection mirror (9), which are used for forming a lower beam light shape. The first grade reflection mirror (10) can form the spreading width of the lower beam light shape independently, the second grade reflection mirror (9) increases the number of ray of light forming the lower beam light shape, and part of reflected light is used for forming a III region of the lower beam light shape. The ray of light emitted from an LED light source on the lower beam LED circuit board (8) is reflected by the first grade reflection mirror and the second grade reflection mirror, most ray of light therein is emitted after refracted by a lens (4) and forms a spreading width (5-1) of the lower beam light shape on a screen, the other part of ray of light is emitted from the lens (4) after reflected and refracted by the condenser to form a stop line (5-2) of the lower beam light shape and the III region (5-3). According to the invention, a square aluminizing surface does not need to be made on a radiator or other parts, the parts are simple to machine, and the cost is lower; the volume of the automobile lamp module is smaller, and the switching between the upper beam and lower beam has no noise.

The invention relates to an air floatation high-speed electric main shaft, in particular to an air floatation high-speed electric main shaft for a machining tool. A lower air bearing block assembly 7 is fixed on a thrust bearing 9, the upper part of the lower air bearing block assembly 7 is provided with a stator 6, the front end of a shaft core 5 is provided with a chuck accessory 11, an aluminum water jacket assembly 3 is fixed at the upper opening of a body assembly 10, and a tool changing cylinder assembly 1 is fixed on the upper part of the aluminum water jacket assembly 3; and the middle part of the shaft body of an upper air bearing 4 is provided with an upper air bearing cooling water passage 12. The main shaft is an electromechanical integrated base piece with high revolution number and high precision, has simple and compact structure, and is convenient to install, high in heat dissipation efficiency, multifunctional and convenient for popularization and application.

The invention discloses a precision cycloidal-pin wheel planetary transmission device which comprises a machine base, a power input shaft, an eccentric bushing provided with two off centers, a cycloidal wheel I, a cycloidal wheel II, a dowel pin for cycloidal wheels, a power output shaft, a wheel spider I, a wheel spider II and two sets of pin gears that are respectively arranged on the wheel spider I and the wheel spider II; one end of the dowel pin for cycloidal wheels is fixedly arranged on a flange of the power output shaft and the other end is inserted into an isotonic pin hole of the cycloidal wheel I and the cycloidal wheel II to form a pin type output mechanism; the direction of a tooth outline on which the cycloidal wheel I and a pin gear I are meshed and the direction of a tooth outline on which the cycloidal wheel II and a pin gear II are meshed are reverse. The precision cycloidal-pin wheel planetary transmission device of the invention can eliminate or reduce tooth clearance during the transmission process, thereby improving transmission efficiency, reducing vibration and noise and prolonging service life; the relative position of the two wheel spiders in a circumferential direction is adjustable, so that meshed gap and return difference can be controlled effectively and more options are available when shaping the tooth outline of the teeth of the cycloidal wheels.

The invention relates to the technical field of precision assembly, in particular to a tiny component assembling device and method. The tiny component assembling device is characterized by consisting of a feeding clamp unit, combined adsorbing clamp unit and an assembling clamp unit, wherein the combined adsorbing clamp unit comprises a connecting block, a U-shaped pneumatic connecting block, a sucking disc connecting post, a left clamp finger, a right clamp finger, a sucking disc, a transitional adsorbing block, a positioning block and a pneumatic clamp; the transitional adsorbing block is designed to have a series of different sizes and structures and is used for adsorbing tiny components with various structural characteristics, so that the shift function of a clamp is achieved and the universality of the clamp is improved; the transitional adsorbing block adsorbs, moves and assembles the tiny components in the assembling process, and fixes an assembly after completion of the assembling process, thus ensuring that the assembly precision is not damaged, and achieving precision assembly of the tiny components. The tiny component assembling device and method are applicable to clamping adsorption, movement, assembly and fixation of tiny mechanical components.

The invention provides a carrying platform elevating gear, a reaction cavity, and a plasma processing device. A bracket driving source drives a shaft lifting bracket to do lifting motion. A bellows shaft passes through the shaft lifting bracket and is fixedly connected with the shaft lifting bracket, so as to do lifting motion with the shaft lifting bracket in a linear bearing, thereby realizing lifting motion of the carrying platform which is fixed on the bellows shaft. In the carrying platform elevating gear, a guiding mechanism is used to limit axial rotation of the bellows shaft in a lifting process. The bellows shaft passes through the linear bearing, a guiding shaft installing assembly, and a shaft lifting bracket in sequence. The guiding shaft installing assembly tightly holds the bellows shaft. The upper end of the guiding shaft is fixed on the cavity wall of the reaction cavity. The lower end of the guiding shaft passes through the guiding shaft installing assembly, so that the guiding shaft installing assembly does lifting motion with the shaft lifting bracket along the guiding shaft. The carrying platform elevating gear can limit rotation degree of freedom of a connecting rod, so as to ensure a carrying device from deflecting.

The invention relates to an online wheel run-out detecting device. The online wheel run-out detecting device includes a frame, a chassis, a lifting cylinder, supports, bearing bases, linear bearings, mounting plates, guide shafts, a lifting shaft, a servo motor, a synchronous pulley, a connecting plate, a synchronous belt, a synchronous pulley, a base, a connecting shaft, a servo motor, a shaft sleeve, a lower end cap, a connecting shaft, a shaft sleeve, and an oil cylinder. The online wheel run-out detecting device can meet requirements of online wheel run-out detection, meanwhile it has the characteristics of simple structure, convenience in manufacturing, stable performance and capability of meeting machining requirements on precision, and can meet requirements of automatic production.

The invention discloses a heavy-duty overrunning clutch, which comprises an outer ring, an inner ring, a plurality of rollers and a retaining frame. The retaining frame comprises a support ring I, a support ring II and a plurality of support columns corresponding to the rollers. Spring plates are fixedly arranged on the support columns along the axial direction and are used for applying pre-tightening force on the rollers along the engagement direction of an engagement slot. The direct processing of a limit seat on the outer ring can be avoided, the working efficiency can be increased, the processing cost can be reduced, the service life can be prolonged, and the transmission effect can be guaranteed. Moreover, relevant components can be replaced easily after being damaged, the outer ringneeds not to be rejected as a whole, and the cost of maintenance and use can be reduced. The axial length of the overrunning clutch and the rollers can be increased theoretically indefinitely, the engagement length can be increased, and thus the bearing capacity of the overrunning clutch can be improved. Meanwhile, the pre-tightening force can be applied at multiple points of the rollers according to needs, and the limiting balance for the rollers can be guaranteed while the axial length is ensured, so that the rollers cannot deviate from the axial line of the inner ring. Therefore, the stable operation of the overrunning clutch can be ensured, and mechanical failure can be avoided.

The invention discloses an automatic film tearing machine for accessory assembly. The automatic film tearing machine comprises a transmission mechanism, a positioning and supporting mechanism, a filmtearing mechanism and a feed box, wherein the transmission mechanism is horizontally arranged on a rack; the positioning and supporting mechanism is arranged at a film-tearing station; the film tearing mechanism is arranged above the film-tearing station; the film tearing mechanism comprises a rotating component, a film clamping component and a pressing component; the film clamping component and the pressing component are respectively connected to the output end of the rotating component; the film clamping component and the pressing component comprise at least two groups, and every two groupsare arranged at an interval; the output ends of the film clamping component and the pressing component are downwards obliquely arranged opposite to each other; the feed box is arranged below the filmtearing mechanism and has an upward opening; after the protective film on gum is torn out by the film tearing mechanism, the torn protective film is put in the feed box. The automatic film tearing machine for accessory assembly disclosed by the invention is applicable to automatic whole line assembly of accessories, multiple films are torn each time, the film tearing efficiency is effectively improved, position offset of the gum or the glass sheet in the film tearing process is effectively avoided, and the assembling precision and quality are ensured.

The invention discloses a welding tooling device for a pillar frame of a machine cabinet and an assembly method of the device, wherein the device comprises a clamp body (1) and is characterized in that a positioning element (2) and a clamping device (3) are fixedly arranged on the clamp body, the positioning element (2) is used for horizontal position limitation of all parts of the pillar frame of the machine cabinet, and the clamping device (3) is matched with the positioning element (2) for clamping all the parts of the pillar frame of the machine cabinet in the horizontal direction. By adopting the device and the method disclosed by the invention, the physical labor of operation staff can be greatly reduced, and the assembly and welding efficiency can be improved; and the welding thermal deformation of a workpiece can be controlled or eliminated, and the instability of manual welding can be reduced.

The invention discloses a tower piece body, a tower section, a tower and a manufacturing method of the tower piece body. The manufacturing method of the tower piece body includes the following steps that the tubular tower section is provided, and the tower section comprises a longitudinally extending through hole and a tower wall surrounding the through hole; cutting is carried out sequentially along two or more pre-cutting lines of the tower section, a seam which extends in the axial direction and penetrates through the wall thickness of the tower is formed at each cut position, and a first cutting surface and a second cutting surface are formed in the tower wall and correspond to the seams; and connecting pieces are arranged, specifically, after the seam is formed after each time of cutting, the first connecting piece and the second connecting piece are arranged on the first cutting surface and the second cutting surface correspondingly, so that the first connecting piece and the second connecting piece are made to be at least partially opposite to each other, and the opposite parts are positioned on the inner side or the outer side of the tower wall.

An eccentrical assembling method for dual-cylinder rotary compressor includes assembling upper cylinder with its cover, assembling lower cylinder with its cover, centralizing them, fixing with screw bolts to obtain assemblies M and N, fixing M, mounting crankshaft, the first piston, intermediate plate and the second piston, putting N on it, regulating the position of upper cylinder cover, prefixing both cylinders, detaching lower cylinder cover, mounting two fixing screws, measuring the eccentrical gap between N, the second piston and crankshaft, mounting lower cylinder cover, and mounting silencer. Its advantages are high precision and high performance of compressor.

The invention relates to the field of product pin assembly for the electronic connector industry, in particular to an FPC cam pin inserting machine. The FPC cam pin inserting machine comprises a rack, a discharge plate, a feed roller, a transport track, a feeding mechanism, a pin pressing mechanism, a pin inserting mechanism, a cutting and bending mechanism, a transmission device and a control assembly, wherein the discharge plate is arranged at one side of the rack and is used for placing a to-be-inserted part of an FPC; the feed roller is arranged below the discharge plate; the transport track is arranged on the rack and is connected with the discharge plate; the feeding mechanism is arranged at one side of the transport track; the pin pressing mechanism is arranged at one side of the feeding mechanism for pressing and fixing the to-be-inserted part of the FPC; the pin inserting mechanism is arranged below the pin pressing mechanism and can take out the pin and insert the pin into the to-be-inserted part of the FPC; the control assembly controls various mechanisms to act; the transmission device comprises a drive servo motor, a cam transmission synchronizing wheel and a transmission shaft; the drive servo motor is connected with the cam transmission synchronizing wheel; the cam transmission synchronizing wheel is fixedly connected to the bottom end of the transmission shaft; the pin pressing mechanism, the pin inserting mechanism, the cutting and bending mechanism are sequentially fixed on the transmission shaft from top to bottom; and the control assembly is connected with the discharge plate, the transmission device and the feeding mechanism respectively.

The invention relates to a pre-tightening device of the automobile main reducer and a pre-tightening method of the same. The device is characterized in that a working platform is arranged for suspending the main reducer. A rotatable bearing pre-tightening torque measurement mechanism is arranged under the platform. The method is characterized in that the pre-tightening torque of a main gear bearing and the tightening torque of a main gear nut are measured while the main gear nut is tightened by a nut tightening mechanism and a main reducing bearing seat is rotated by the bearing pre-tightening torque measurement mechanism. When the pre-tightening torque of the main gear bearing and the tightening torque of the main gear nut both reach within the area of the setting value, the pre-tightening of the automobile main reducer is completed. The method can effectively improve the qualification rate of products and increase the working efficiency.

The invention provides a swash plate type axial piston pump or a motor, which comprises a shell, a main shaft, a plurality of piston components, a swash plate, a cylinder, a distributive flow disk and a connecting part, wherein the connecting part comprises a first part and a second part which relatively swing, the first part is combined with the main shaft and synchronously rotates with the main shat, the swash plate is combined with the second part and synchronously rotates with the second part, a cylindrical inner hole is arranged on the center of the cylinder, the main shaft stretches into the cylindrical inner hole, the main shaft and the cylindrical inner hole are matched, and when the main shat rotates, the cylinder is driven by the piston components to rotate. The main shaft and the cylinder of the swash plate type axial piston pump can form clearance fit, the transmission line of the swash plate type axial piston pump is the main shaft, the connecting part, the swash plate, the piston components and the cylinder, and the swash plate type axial piston pump has the advantages of excellent assembly, high total efficiency and small lateral force, and can achieve the advantages of coaxial or through-shaft connection and the like.

The invention provides a method for establishing a temporary support moulding bed system for steel structure assembly. The method comprises the following steps: establishing a three-dimensional simulation model of unit bodies needing to be assembled of a large steel structure via three-dimensional computer modeling software at first, and determining unit body assembly postures and assembly sections of the steel structure according to the simulation model, then, optimizing and establishing an assembly coordinate system according to the assembly postures of the unit bodies, outputting three-dimensional coordinate of each feature appearance control point of the structure to be assembled in the assembly coordinate system, and finally, designing the temporary support moulding bed system generating no mutual interference with unit body members according to the three-dimensional coordinate system and the unit body assembly postures of the steel structure. The method provided by the invention can be used for solving the problems of high assembly difficulty and high control precision of large space steel structures and particularly steel structures with complex space modeling, such as box-shaped curved steel structures and the like, reducing the height of a construction working plane in assembly construction, guaranteeing the assembly precision, reducing the working risk, improving the construction efficiency and predictability and maximally reducing auxiliary construction materials.

The invention discloses an overall assembling method for an ultra-wide framing steel box girder, and relates to the technical field of steel box girder assembling. The method comprises the steps performing plate unit manufacturing and plate assembly welding, beam section matching assembly welding and pre-assembling and pre-assembling inspection; carrying out beam section assembly welding accordingto the sequence of a bottom plate, a transverse partition plate, a middle top plate, a primary positioning inner web plate, an anchor web plate, other top plates, a secondary positioning anchor web plate, a middle cross beam and a cantilever arm block, and carrying out three-dimensional stepped propelling mode section-by-section assembly and welding; and during pre-assembling, with considerationof the influence of beam section compression amount caused by welding circular seam shrinkage amount and cable force on the length, correcting the accumulated total length and error of the previous pre-assembling in the next assembly. The method has the advantages that the butt joint weld joint amount of the steel box girder on the total assembly jig frame can be reduced, and the manufacturing period is shortened; a three-dimensional step-shaped propelling mode is adopted, pre-assembling is carried out after section-by-section assembly welding, and the boundary dimension is easy to control; the assembling precision of the steel box girder can be ensured, the assembling quality is controlled, high-altitude adjustment is avoided, and the erection period is shortened.

The invention discloses a synchronous vertical swing lift construction method for a double inclination arc tower. The method comprises the following steps: arranging a vertical swing winch at the combination of two gate-shaped arch ribs and reinforced concrete, arranging a bearing gate type lifting tower at the position of the symmetrical central line of the arch ribs, arranging an upper lifting sustained center and a lower lifting sustained center at the top of the tower and on the arch ribs respectively, and performing symmetrical synchronous vertical swing lift through two pairs of hydraulic lifters by utilizing the symmetry character of the double arch ribs, so as to achieve the purpose of vertically swinging the arch ribs from the planimetric position to the mounting position. The construction method has the advantages that the arc tower construction difficulty is reduced, tools and materials are saved, the construction period is shortened, and the installation of two mammoth arch rib structures can be completed with high precision and high quality; aloft work of the arch ribs is converted into ground integral assembly work, the construction efficiency is high, the safety protection work is easy to organize, and the construction quality is easy to guarantee; machines and equipment required for the construction are in a small quantity, the process is simple, and the operation is safe; the construction speed is high, the manufacture cost is low, and the investment is saved.