80results about How to "Reduce the difficulty of machining" patented technology

The invention relates to a multi-beam coupling output device for a high-power semiconductor laser system, belonging to the technical field of laser. With respect to the device, light with two wavelengths, which is respectively emitted by a first semiconductor laser array and a second semiconductor laser array, is subject to wavelength coupling by using a wavelength coupler, thus obtaining a beam with two wavelengths; light with two wavelengths, which is respectively emitted by a third semiconductor laser array and a fourth semiconductor laser array, is subject to wavelength coupling by using the wavelength coupler, thus obtaining a beam comprising two wavelengths; and the two beams respectively with two wavelengths are combined by a polarization coupler to finally obtain a combined beam, and the combined beam is output. The coupling output device has more reasonable structure, smaller volume, good controllability and lower cost, and is easy to process.

The invention relates to the technical field of chip mounters, in particular to a mounting structure of the chip mounter, and discloses a miniature array electromagnet mounting assembly which is assembled by a plurality of mounting heads capable of independently working in rows and arrays. A suction nozzle is moved up and down by the mounting head adopting an electromagnet; the direction positioning of all the suction nozzles of the mounting heads is controlled by a stepper motor; a shell, the lifting of the suction nozzle and a rotation mechanism are kept in a same axial lead; and the suctionnozzle is provided with a retractable damping device, thus effectively releasing the impact on a component, and simultaneously compensating the component mounting with unequal thickness. The mountingassembly is neatly integrated, has reasonable structure, simple and direct transmission link, small volume, light weight and effective response speed and facilitates flexible integration.

The invention relates to a through-hole connection structure and connection method of a titanium aluminum supercharger turbine impeller and a rotating shaft. The connection structure comprises the rotating shaft, the titanium aluminum turbine impeller and a shaft end locking nut. A through hole is formed in the center of the titanium aluminum turbine impeller. A thread is arranged at the end portion of the rotating shaft. Seen from the end of a turbine, the rotating direction of the thread is the same as the rotating direction of the turbine rotating shaft during working. The lower portion of the thread is the rotating shaft connection portion. The rotating shaft connection portion penetrates through the through hole of the turbine impeller. The rotating shaft connection portion and the turbine impeller through hole are in transition fit or interference fit. The shaft end locking nut is installed on the thread of the end portion of the rotating shaft. As for the connection problem of the titanium aluminum turbine impeller and the rotating shaft, the through-hole connection and threaded locking structure are adopted, the durable and reliable connection between the titanium aluminum turbine impeller and the 42CrMo rotating shaft can be achieved, the requirements for the connection strength of the supercharger turbine impeller and the rotating shaft are met, and meanwhile the connection structure has the advantages of being simple in structure, easy to machine and the like.

The invention discloses an acoustic logging while drilling method and device based on the double-source flyback technology. The method includes: a far transmitter and a near transmitter are used, during logging, the far transmitter Tf is stimulated first, the transmitting amplitude of the far transmitter Tf is A1, the near transmitter Tn is stimulated after a time delay tau, the transmitting polarity of Tn is opposite to that of Tf, and the transmitting amplitude of the near transmitter Tn is A2; during sound source stimulation, signals on N receivers are collected and recorded; the drill collar waves stimulated by the far transmitter and the near transmitter reach the positions of the receivers at the same time, the polarities of the drill collar waves of the far transmitter and the near transmitter are different, the amplitude of the drill collar waves of the far transmitter and the near transmitter are the same, the drill collar waves of the far transmitter and the near transmitter are overlaid and balanced off, and drill collar wave compression is achieved; a sound wave interference method is used to compress the influence of the residual drill collar waves in subsequent data processing, the speed of stratum waves is extracted, and the acoustic logging while drilling technology which needs no sound insulation devices is formed. The acoustic logging while drilling method has the advantages that the drill collar wave interference during single pole longitudinal wave logging while drilling is solved, drill strength destroying caused by grooving is avoided, and instrument machining difficulty and manufacturing cost are lowered.

The invention provides a process for preparing a heterojunction solar cell without a grid electrode on the front surface at a low temperature. P type and N type amorphous silicon membranes which are alternately distributed in a cross finger form are deposited by a PECVD (Plasma Enhanced Chemical Vapor Deposition) method at a relatively low temperature, and the P type and N type amorphous silicon membranes are respectively deposited by combining a mask plate and different shielding plates, so that damage caused by an etching step in the prior art is avoided; meanwhile, the mask plate and the shielding plates are not required to be frequently cleaned, so that the step of combining an HIT (Heterojunction with Intrinsic Thin film) cell and an IBC (Interdigitated back contact) cell is also simplified, and the process is suitable for industrial production.

The invention discloses a roller-type hydraulic rocking arm component. The structure is as follows: one end of a rocking arm is provided with a short shaft, a bearing is embedded outside the short shaft and into the roller, and the roller and a camshaft form a transmission pair; an oil duct is arranged in the rocking arm, the middle part of the rocking arm is provided with a rocking arm shaft, the other end of the rocking arm is provided with a plunger bushing, and a plunger, a check valve and a return spring are sequentially arranged in the plunger bushing; the upper end of the plunger bushing is provided with a plunger cover plate, and the plunger cover plate is provided with an oil return channel; and the plunger bushing is connected with a slider through a cutting sleeve, the slider closely contacts a valve bridge, and the valve bridge contacts a valve push rod mechanism. The invention is suitable for an overhead camshaft mechanism, and the structure is simplified since the valve support column, the push rod and other parts connected with the cam are reduced. The rocking arm forms a zero-clearance fit with the camshaft and the valve push rod, thereby lowering the noise. On the premise of enhancing the strength of the engine block, cylinder head and the like, the volume of the engine is reduced, so that the structure is more compact reasonable, and the economical efficiency and power performance of the engine are enhanced.

The invention relates to a dynamic pressure calibration device, and provides a sinusoidal pressure generation chamber with filter characteristics, which comprises a sinusoidal pressure chamber body with a main-assisted structure, wherein the two sides of the sinusoidal pressure chamber body are provided with an auxiliary sinusoidal pressure chamber and a main sinusoidal pressure chamber respectively; a mechanical filter is arranged in a communicated channel between the auxiliary sinusoidal pressure chamber and the main sinusoidal pressure chamber; the top and bottom of the auxiliary sinusoidal pressure chamber are grooved to form a first sensor mounting position and a second sensor mounting position respectively; the top and bottom of the main sinusoidal pressure chamber are provided with through holes to form an air inlet and an air outlet respectively; and the main sinusoidal pressure chamber part of the sinusoidal pressure chamber body with the main-assisted structure is fixed in a middle hole reserved on the middle part of a chamber support of which the top is provided with the air inlet and the bottom is provided with two first square holes and a second square hole. The device of the invention can eliminate the influence of higher harmonics, simultaneously reduce difficulties in mechanical machining, improve the accuracy of the mechanical machining and greatly improve the degree of distortion and dynamic-static amplitude ratio of sinusoidal pressure waveforms generated by a sinusoidal pressure generator.

The invention relates to a processing technique of a new steel plate hoe, belonging to the field of the general agricultural mechanism or agricultural tool technology. The producing technique uses belt steel and strip steel to mechanically mold a hoe plate and a hoe wedge via mechanical blanking; the hoe plate and hoe are jointed via welded connection with a high automation; the hoe is wearable with a great appearance, energy and fuel saving without smoke and dust pollution and noise pollution, which is especially suitable for the industrial production.

It relates to mechanical parts manufacturing and processing. The proposed C arm is made by compressing the mold to make the direct bar like material, bending the bar to curving shape, and applying timely treatment, mechanical processing and surface processing. It reduces mold cost and processing cost, improved product quality and efficiency, with less continuous processing difficulty.

The invention discloses a propelling-stable cannonball support for an air cannon and a design method of the cannonball support. Grooves with different numbers and sizes are machined in the outer sideof the cylindrical cannonball support, the gap leakage amount generated when the cannonball support moves in a cannon barrel is reduced, the gap between the cannonball support and the cannon barrel can be increased under the same gap leakage amount, and therefore unstable movement caused by the interference such as machining and impurities of the outer wall of the cannonball support and the innerwall of a cannon bore can be reduced, loss generated during launching of the cannonball support under the same launching pressure is reduced, the design and machining difficulty are reduced, and stable launching of the cannonball support is guaranteed; and the two-dimensional cannonball support profile curve is subjected to iteration and calculation through the mode of making the gap leakage amount index objective function, the cannonball support two-dimensional profile of the corresponding design gap leakage amount rate index parameter is obtained, and therefore the geometrical shape of thepropelling-stable cannonball support is designed. The cannonball support and the related design method can provide an efficient and stable propelling test technical support for various air cannon tests.

The invention relates to an annular circulation continuous vacuum coating device which comprises a main cavity, a main vacuum system and coating technology assemblies, wherein the main cavity is provided with a main chamber and a feeding hole capable of being opened and closed; the annular circulation continuous vacuum coating device further comprises a rotary disc, a rotary disc lifting mechanism, a rotary disc rotating mechanism, a feeding chamber, a plurality of technological chambers and a feeding sub chamber vacuum system; the rotary disc rotating mechanism drives the rotary disc to rotate horizontally to transmit a to-be-coated workpiece among the feeding chamber and all technological chambers; the rotary disc lifting mechanism drives the rotary disc to go up and down to switch overthe feeding chamber and the technological chambers between the communicating state of the main chamber and the state of an independent vacuum chamber; the main vacuum system carries out vacuum treatment on the main chamber and all technological chambers; the feeding sub chamber vacuum system carries out vacuum treatment on the feeding chamber separately; and different coating technology assembliesare mounted on all technological sub cavities to realize different coating functions. The annular circulation continuous vacuum coating device can realize annular circulation continuous and low-costcoating production in the vacuum cavity.

The invention belongs to the field of metallurgical equipment and particularly relates to a new structure of super-heavy extruding equipment. The new structure comprises a rear beam, pull rod pressing sleeves and a front beam which are used for forming an extruding machine prestressed rack, wherein an external perforation system is connected with the rear end of the rear beam and comprises a perforation rear beam provided with a fixed perforation cylinder and perforation pull rod pressing sleeves; two ends of each perforation pull rod pressing sleeve are connected with the extruding machine rear beam and the perforation rear beam respectively; a large main working cylinder is fixed on the extruding machine rear beam, small main working cylinders are symmetrically arranged on the left side and the right side of the large main working cylinder, and four side cylinders are symmetrically arranged on the upper side and the lower side of the large main working cylinder; a main plunger of the large main working cylinder is connected with a moving cross beam; an extruding tool is mounted on the moving cross beam; a pair of main scissors is fixed on the extruding machine front beam; and an extruding barrel is arranged between the extruding machine front beam and the moving cross beam. The main machine structure manner is designed for the structure of an extruding machine with the largest tonnage in the industry, the overall performance of the super-heavy extruding machine can be improved, and the strength and extruding precision of super-heavy backward extruding equipment can be improved.

The invention relates to a ceramic matrix composite satellite lightweight structural member surface flatness treatment method and a ceramic matrix composite satellite lightweight structural member, and aims to solve the problems that the flatness requirement is difficult to meet by general machining and high-precision scraping cannot be performed due to relatively high material hardness of the ceramic matrix composite satellite lightweight structural member, the processing difficulty is increased, and the product quality is difficult to guarantee. The ceramic matrix composite satellite lightweight structural member surface flatness treatment method comprises the following steps: carrying out preliminary machining, cleaning and drying on the surface of the ceramic matrix composite satellitelightweight structural member; smearing a glue solution prepared from epoxy resin glue on the surface of the ceramic matrix composite satellite lightweight structural member; carrying out super-finish machining on the surface of a glue layer after the glue solution is cured to form the glue layer; and finally, scraping to enable the surface flatness of the structural member to meet the requirement. The structural member manufactured through the ceramic matrix composite satellite lightweight structural member surface flatness treatment method has the advantages that the surface flatness meetsthe design and use requirements, and the performance is good.

The invention relates to an electronic product shock absorber assembly structure using a fall prevention measure, and belongs to the technical field of structures and strength. Compared with the priorart, the electronic product shock absorber assembly structure has the advantages that an anti-fall gasket design is adopted, ordinary gaskets in the prior art are replaced, friction force between a damping gasket and an anti-fall gasket is increased, so that parts of a shock absorber assembly cannot fall off due to accidental bump brought a small assembly space, and the purpose of fall preventionis achieved; the shock absorber assembly does not need to change the dimensions and structural shapes of other parts, the changing amount of the anti-fall gasket is small, processing difficulty is low, so that the purpose that the shock absorber assembly is simple in structure and easy to realize is achieved; and the amount of compression of the damping gasket is consistent with the structure ofan existing shock absorber, and the purpose of no obvious weakening of the vibration isolation efficiency of an electronic product is achieved.

The invention relates to a saturated fatty acid sterile pipeline transportation device which solves the technical problems that it is hard to transform and mount an existing transportation pipeline, it is needed to stop pipeline transportation during maintenance, a pipeline heating function and a sterilizing function at the connection of the transportation pipeline and a reaction kettle are not available, the heating efficiency is low and the like. The saturated fatty acid sterile pipeline transportation device is provided with the transportation pipeline, wherein a supplementary port heater is arranged at the tail end of the transportation pipeline, the supplementary port heater is provided with a sleeve, a water return valve of the supplementary port heater and a water inlet valve of thesupplementary port heater, the sleeve separately communicates to the water return valve of the supplementary port heater and the water inlet valve of the supplementary port heater, separately, and the upstream end of the sleeve communicates to the transportation pipeline. The transportation pipeline is further provided with a pipeline heater and a sterilizing device. The invention can be widely applied to the saturated fatty acid sterile pipeline transportation device.

The invention belongs to the technical field of mechanical hydraulic control, and relates to a split metering valve. The metering valve comprises a valve body (1) and a bush (2), and the bush (2) sleeves the valve body (1). A servo fuel oil inlet hole (3) and a servo fuel oil inlet hole (4) are formed in the valve body (1) and the bush (2) correspondingly. A throttling hole (5) and a servo oil path (6) are formed in the valve body (1). The split metering valve is characterized in that the valve body (1) and the bush (2) are split, the valve body (1) is divided into a valve (1-1) and a valve (1-2), and the valve body (1) is divided into two portions by the servo fuel oil inlet hole (3). The bush (2) is divided into an instruction control section (2-1) and a fuel oil metering section (2-2) according to a function section. The machining difficulty is reduced, the series connection manner is adopted for connection in the assembling process, all the portions can be aligned by themselves, the cooperation difficulty is reduced, and assembling efficiency is improved.

The invention provides a sealing structure of a horizontal axially split pump and a mounting method of the sealing structure. The problems that the process requirement of head-to-head metal sealing adopted for an existing horizontal axially split pump is high, the cost of flat gasket sealing is high, the reliability of gumming sealing is poor, and interstage sealing is lacked are solved. The sealing structure comprises a stereoscopic sealing groove and an integrated sealing element matched with the stereoscopic sealing groove. The stereoscopic sealing groove is formed by sealing ring sealing grooves located in the peripheries of N shell body sealing rings separately and a sealing groove in an upper pump body and a lower pump body. The sealing groove in the upper pump body and the lower pump body comprises two pump body sealing grooves in the axially split surface of the lower pump body and two pump shaft end sealing grooves. The two ends of the two pump body sealing grooves are connected with the two pump shaft end sealing grooves separately, and each sealing ring sealing groove is connected with the two pump body sealing grooves. N is determined by the stage number of the horizontal axially split pump, the impeller form and the impeller arrangement position.

The invention relates to an automobile exhaust waste heat recycling and charging device based on a pulse tube generator. The device comprises an expansion machine (1) capable of recovering work, a pulse tube generator thermal head (2), a heat exchange system (3) and a rectifying system (4), wherein the heat exchange system (3) takes heat from high-temperature exhaust gas and then release heat at the room temperature end; through the simple harmonic motion of a piston of the expansion machine (1) capable of recovering work, the transmission of acoustical power from one high-temperature end to another high-temperature end and the recycling process of a working medium in the expansion machine (1) and the pulse tube generator thermal head (2) is completed, so that electricity power is generated by the piston motion of the expansion machine (1) to complete the process of electricity generation, thus being capable of charging automobile storage batteries though the rectifying system (4). Compared with the prior art, the automobile exhaust waste heat recycling and charging device based on the pulse tube generator has the advantages that thermal energy is recycled to provide power to an automobile while thermal pollution of the automobile is reduced, so that a positive circulation of energy saving and emission reduction inside the automobile is realized; in addition, no movement component is arranged at the high-temperance, no high-precision matching requirement is imposed, and the machining difficulty is low, thus being capable of improving reliability of a system and feasibilityof processing and manufacturing.

The invention relates to an assembling tool and assembling method for a single-slit self-lubricating joint bearing, and belong to the field of sliding bearing assembling. The tool and method involve the assembling tool and a support, the upper portion of the assembling tool is conical, the taper angle is 20-30 degrees, the size of the minimum position of the taper angle is smaller than that of theminimum position of the inner diameter of the end surface of the bearing, and the size of the maximum position is 5-8 mm larger than a spherical diameter of the joint bearing; a long-strip-shaped through groove is machined in the radial direction of the taper of the assembling tool, the assembling tool is made of 45 # or 42CrMo, and the hardness of a surface hardening layer of the assembling toolexceeds the hardness of a bearing outer ring and reaches HRC 60 or above; and the assembling tool needs to be used in cooperation with the cuboid support, and the cuboid support is placed right abovethe outer ring in the assembling process. According to the assembling tool, die machining is is simple, in the assembling process, the operation is flexible and convenient, hours of work are saved, no damage exists during joint bearing assembling, the product quality is greatly improved, and the using reliability of the bearing is guaranteed.

An intelligent well completion underground digital hydraulic communication controller is characterized in that an upper connector is arranged at one end of a valve body, a lower connector is arranged at the other end of the valve body, a piston is arranged in the valve body, the two ends of the piston extend into the upper connector and the lower connector respectively, piston stop structures are arranged in the upper connector and the lower connector respectively, and a lock sleeve is arranged between the piston and the valve body; a first reset elastic structure body is sleeved on the piston in a seventh hydraulic cavity formed between the upper part of the lock sleeve and the piston; a sixth hydraulic cavity formed by a first radial groove and the lock sleeve, a fifth hydraulic cavity formed by a second radial groove and the lock sleeve, a fourth hydraulic cavity formed by a third radial groove and the lock sleeve and a second hydraulic cavity formed by a fourth radial groove and the lock sleeve are sequentially machined in the outer side wall of the valve body. A fifth radial groove is machined in the position, located on the inner side of the fourth hydraulic cavity, of the lock sleeve and forms a third hydraulic cavity with the piston, a first hydraulic cavity is formed between the piston below the lock sleeve in the axial direction and the valve body, a lock sleeve locking structure is arranged on the valve body in the first hydraulic cavity, and the piston is sleeved with a second reset elastic structure body.