91results about How to "Does not cause deformation" patented technology

A device and method to measure material residual stress changes, its characteristic is using magnetostrictive to measure residual stress changes of ferromagnetic material, which includes two parts, the measurement system and data processing method. The measurement system includes two parts, the magnetic field generation equipment and the equipment to measure and record magnetostrictive. The equipment to measure and record magnetostrictive includes the resistance strain slice, the dynamic strain device and the computer acquisition system. The data processing method uses a formula to process the initial magnetostrictive average and the final magnetostrictive average, to obtain the residual stress changes instance. It solves the problems to reduce, control and measure residual stress in existing technology. The invention is characterized by fast, efficient, no material deformation, and so on.

The invention is to solve the problem that when embedded parts are embedded, and a secondary injection moulding mode is used to mould the embedded parts which become an integrated product, the secondary injected and moulded product and the integrated product are not caused to deform as far as possible. After embedded parts (50A) made of thermoplastic synthetic resin are arranged inside a mould under the state of breaking the mould, the mould is closed. A bush (10A) is used to extrude the embedded parts (50A) into a female die (36). Subsequently, the embedded parts (50A) are heated up and softened. On one hand, the bush (10A) is moved far from the female die(36); on the other hand, the composite resin material flows into and is injected into the bush (10A) before the composite resin material is guided inside a mould cavity (44A) between a male die (5A) and the female die (36) so as to cool and harden the connected embedded parts (50A) and the secondary moulded products (51A) by cooling the surface of the male die (5A) and the female die (36).

The invention is applicable to the technical field of gratings, and provides a method and a system for preparing micro-nano optical fiber Bragg gratings. The system comprises a laser generating unit,a preparation unit, a displacement platform and an upper computer. Samples can be arranged on the displacement platform, and each sample is a micro-nano optical fiber coated with a layer of curing adhesive; the laser generating unit is used for generating femtosecond laser with preset power values and transmitting the femtosecond laser to the preparation unit; the preparation unit is used for focusing the femtosecond laser on the micro-nano optical fibers; the displacement platform can move under the control of the upper computer, so that radial scanning can be carried out by the femtosecond laser along the micro-nano optical fibers, and preliminarily arranged Bragg gratings can be cured on the micro-nano optical fibers. The method and the system in an embodiment of the invention have theadvantages that tedious grating sensitivity enhancement treatment procedures can be omitted when the micro-nano optical fiber Bragg gratings are prepared by the aid of the method and the system, grating periods can be controlled, and the micro-nano optical fiber Bragg gratings are high in reflectivity; the Bragg gratings prepared by the aid of the method and the system are cured on the surfaces ofthe micro-nano optical fibers and are extremely sensitive to external environments, and the system is low in cost.

The invention relates to a pipe grasping device, in particular to an automatic tube grasping device used for grasping a vertically hung U-shaped pipe. The automatic pipe grasping device comprises a bracket and a plurality of clamping jaws; each clamping jaw comprises a top clamp seat, a transmission element and a pair of clamping boards; the clamp seats of the clamping jaws are arranged on the bracket in parallel; the transmission elements are connected with the clamping boards; the transmission elements are arranged on the clamp seats; the transmission elements can drive the clamping boards to rotate around the axial lines of the transmission elements; the clamping boards are controlled to be on and off through clamping jaw driving devices; the transmission elements are connected with directional control devices; and the directional control devices control the transmission elements to rotate. The automatic pipe grasping device provided by the invention can be used for realizing that multiple vertically-hung long U-shaped copper pipes are simultaneously grasped, the grasping way is simple and efficient, the device is light and convenient, the structure is compact, the occupied space is small, and the copper pipes cannot be distorted, thus, the condition for automatically feeding pipes efficiently is realized, and the guarantee for breaking through efficient and automatic pipe sleeving technique is provided.

The present invention provides a device for the fine adjustment of a balance spring. In order particularly to put a watch into beat and adjust the isochronism, in addition to the poising screws ( 2 a, 2 b) of the balance ( 1 ) and the fine adjusting screw ( 7 ) pressing on the index tail 20 a to alter the orientation of the index ( 20 ), the device includes, on the one hand, two screws ( 19, 29 ) respectively fixed in the balance cock ( 10 ) and in the index ( 20 ) to manoeuvre clamps by means of L-shaped rocking elements ( 13, 23 ) to fix the end of the balance spring and define its useful length, and on the other hand, a screw ( 9 ) for immobilising the index ( 20 ) in a determined position, these three screws ( 9, 19, 29 ) enabling a fine adjustment to be carried out.

The invention relates to a method for manufacturing a micronanostructure on the surface of a material, in particular to the method for manufacturing the micronanostructure on the surface of a block amorphous alloy. The method is characterized by comprising the following steps of: completely cleaning oxide, oils and fats from the surface of the block amorphous alloy in a conventional way; making the surface of the block amorphous alloy, required to be processed, in a vacuum or inert gas protection state in a proper way; and rolling the surface required to be processed under the action of a given pressure with a roller-shaped die which is heated to an enough high temperature so as to obtain the block amorphous alloy surface with the micronanostructure. The surface manufactured by the methodis high in quality, low in processing cost, high in processing efficiency and flexible in technical operation.

The invention discloses a casting method for pouring and molding a thin-wall investment pattern steel casting, aiming to prevent the casting from cavity-shrinking, loosening or deforming. The method comprises the following steps: a. first preparing multiple wire-shaped metal materials with diameter of 0.5-1mm and length of 50-100mm and coating the outer surface of each wire-shaped metal material with a layer of wax with thickness of 0.1-0.2mm; b. inserting the wire-shaped metal materials from the last step into an assembled wax module, wherein the inserting thickness is 4-8mm; c. coating and smearing the wire-shaped metal materials with slurry and sands together with the wax module; d. after forming a module shell on the surface of the wax module, firstly destroying parts of module shell on the surface of the other end of the wire-shaped metal materials, drawing out the wire-shaped metal materials, and then performing dewaxing and roasting; e. finally pouring molten steel, wherein cavities which are formed in the module shell after the wire-shaped metal materials are drawn out can be used for drainage. By virtue of the method, the pass percent of the castings is enhanced.

A self-aligning roller bearing comprises an outer ring, an inner ring arranged inside the outer ring, a retainer which is positioned between the outer ring and the inner ring and has a pocket and two columns of rollers which are circumferentially arranged at intervals and positioned inside the pocket. The outer ring is axially divided into two outer-ring units. A guide ring is axially arranged between the two outer-ring units. The guide ring radially extends between the two columns of rollers and is positioned on the outside of the retainer. According to the invention, the problem that existing self-aligning roller bearings are complex to assemble and bearings are easy to deform during assembling of the bearings is solved, the influence of gyratory motion of the rollers is minimized, and the difficulty of processing the outer ring in the wide series self-aligning roller bearing is reduced.

The invention discloses a skeleton assembly process of a full-loading passenger car, which is characterized by comprising: after prefabricating the chassis skeleton, directly assembling a suspension rack, a bridge and tires, then welding and merging the prefabricated five skeletons of the car body with the assembled suspension rack, bridge and tires; and assembling the whole car and the chassis accessories via welded seam polishing, skeleton calibration, external covering and painting. Compared with the existing skeleton assembly process of the full-loading passenger car, the assembly process can be matched with the existing work position procedures without increasing apparatus investment in the prior art; and the difficulty in assembling the suspension and the bridge due to a small operation space in the prior art is reduced, the deformation of the chassis caused by non-uniform stress can be avoided, the precision of the sizes of the skeleton parts can be ensured, the assembly cost is lowered and the assembly efficiency the improved.

A safe computer room trunking comprises a bottom box and a cover plate, where the upper end of the bottom box is open. A bearing edge bending towards the interior of the bottom box and used for supporting the cover plate is arranged at the upper end of the bottom box, a threaded hole is formed in the bearing edge, a long-strip hole is formed in the position, corresponding to the threaded hole, of the cover plate, and the cover plate and the bottom box are fixed in the manner that a bolt penetrates through the threaded hole and the long-strip hole at the same time; a separation board is arranged inside the bottom box, wherein the separation box and a channel inside the bottom box are identical in direction. According to the safe computer room trunking, the bottom box and the cover plate are connected through the bolt, the connection mode is simple, connection is firm, and deformation of the trunking can be avoided. In addition, the separation box is arranged inside the bottom box to separate wires, later check is facilitated, and accidents caused by disorder of the wires can be avoided. The separation board also can play a role of supporting the cover plate, so the strength of the cover plate is enhanced.

The invention discloses a vibration screen mesh easy to assemble and disassemble. The vibration screen mesh easy to assemble and disassemble comprises a plurality of screen meshes, wherein an upper notch is arranged on the top part of each screen mesh; a lower bulge is arranged on the bottom part each screen mesh; each lower bulge can be placed fitting to the corresponding upper notch; a sealing rubber strip is adhered and fixed to the bottom part of each lower bulge, is hollow, and is in an annular shape after being adhered; the inner diameter of each annular shape is larger than the outer diameter of screen cloth; one end of each sealing rubber strip is sealed; the other end of each sealing rubber strip stretches out of the outer side of each screen mesh; and a ball part air bag is arranged at the stretching end of each sealing rubber strip. According to the vibration screen mesh easy to assemble and disassemble provided by the invention, principles of hollow sealing rings and sucking balls are ingeniously utilized, and each two adjacent layers of screen meshes are automatically separated after the screening is accomplished, so that the operation can be carried out simply and conveniently, the testing accuracy of the screen mesh cannot be affected, and the service life of the screen mesh is prolonged.

The invention belongs to the technical field of embroidery equipment, and particularly relates to automatic cloth clamping and changing embroidery equipment with left and right cloth rollers. The automatic cloth clamping and changing embroidery equipment with the left and right cloth rollers comprises a rack, wherein a bedplate which is arranged under cloth in an embroidery process is arranged onthe rack; an cloth clamping air frame is arranged on the bedplate and connected with the rack; an embroidering area is arranged in the center of the cloth clamping air frame; a mounting beam is arranged over the bedplate and connected with the rack; a first cloth roller assembly and a second cloth roller assembly for cloth winding are respectively arranged at two ends of the rack; and a driving assembly is further connected to the first cloth roller assembly and/or the second cloth roller assembly, and can drive the first cloth roller assembly or the second cloth roller assembly to rotate. Thecloth is clamped by the cloth clamping air frame, and the first cloth roller assembly and the second cloth roller assembly are arranged at the two ends of the rack respectively, so that the cloth isensured to be in a straightening state in the embroidering and conveying processes, the cloth does not need to be cut into pieces in specified sizes before embroidering, the operation process is saved, and the production efficiency is improved.

The invention relates to a deacidification system for paper record files and a using method thereof. The method comprises the following steps of: connecting dozens of bound paper record files in series through a special clamping bracket, soaking the bound paper record files in a soaking tank in a whole, performing ultrasonic deacidification treatment, condensing a waste gas escaping from the top of the soaking tank, storing the waste gas in a recovery tank, pumping deacidified deacidification liquid to a filter to filter impurities, and then returning the deacidification liquid to a liquid storage tank for reuse. The deacidification system can process dozens or hundreds of files in batch at one time, shows good deacidification effect and greatly saves manpower and material resources.

The invention discloses a cloth clamping air frame of embroidery equipment, which comprises a rectangular frame arranged on a rack; two opposite sides of the rectangular frame are respectively provided with cloth pressing mechanisms; other two opposite sides of the rectangular frame are respectively fitted with side cloth clamping strips, and the two cloth pressing mechanisms and the side cloth clamping strips form an embroidery area by enclosing; each side cloth clamping strip is provided with a side cloth clamping area and a narrow channel whereby the side cloth clamping area and the embroidery area are communicated with each other, the length of the side cloth clamping area is equal to that of the embroidery area, and the two ends of the side cloth clamping area are provided with openings for the edge of the embroidery cloth to enter and exit; at least one side clamping cloth strip is in sliding connection with the rectangular frame, and a tensioning mechanism for driving the side clamping cloth strip away from or close to the other side clamping cloth strip is further arranged on the rectangular frame. The side cloth clamping area can provide integral clamping for the edge of the embroidery cloth, the stress at each position of the edge of the embroidery cloth is uniform, deformation cannot occur, and the final embroidery result is ensured; the tensioning mechanism can adjust a distance between the two side clamping cloth strips and can adjust the tensioning state of the embroidery cloth in the clamping process.

The invention relates to an ultrasonic sensor for performing a propagation-time measurement in a liquid, comprising an ultrasound transmitter and a deflecting element made of plastic, into which deflecting element the ultrasound pulses emitted by the ultrasound transmitter are conducted, which ultrasound pulses are deflected on a boundary surface within the deflecting element by reflection. A hermetically sealed air bag is arranged inside the deflecting element. A wall of said air bag forms the plastic/air boundary surface for reflecting the ultrasound pulses. Such an ultrasonic sensor ensures especially good functional capability of the deflecting element over a long time period, while said ultrasonic sensor is economically produced.

The invention relates to a manufacturing process of an anti-counterfeit metal cover, in particular to a process of transferring information patterns to a metal surface by using a film as a carrier and stamping to form an anti-counterfeit metal cover, and the anti-counterfeit metal cover produced by the process. A manufacturing process of an anti-counterfeiting metal cover according to the present invention, the process is characterized in that it also includes the following steps: a composite process: further coating and curing an adhesive layer on the information protection layer, and compounding the film and the metal surface to position the film Adhere to the metal surface; peel off the film; stamping: In the stamping machine, the metal in the above steps is positioned and stamped to form an anti-counterfeiting metal cover. The invention uses the film as the carrier to transfer the information pattern, and the product effect is more superior; the precise positioning of the information pattern on the metal surface is realized; the film can be peeled off after compounding, so that the subsequent processing of the metal will not be affected, and it can be punched out according to the demand. A metal cover of a specific shape. And the stripped film is recycled, which greatly saves the cost.