47results about How to "Guaranteed coplanarity" patented technology

The invention discloses a contact-type reliability test bed capable of conducting mixed loading on an electric main shaft. The test bed is composed of the electric main shaft, a connecting shaft unit, a torque loading device, a radial force electromagnetic loading device, an axial force electromagnetic loading device and a swing arm device. The test bed can load an axial force, a radial force and a torque on the electric main shaft at the same time, control the magnitudes of the three forces in a coordinate mode to simulate cutting forces in different magnitudes and different directions, really and reliably simulate the cutting forces of the electric shaft in practical working conditions, and provide a test foundation for reliability acceleration tests of the electric shaft.

The invention discloses a novel spherical surface grinding machine tool and a grinding method thereof. The novel spherical surface grinding method comprises the following steps: 1) Workpiece installation: the workpiece is installed on the mandrel, and the workpiece has a spherical shape to be processed. On the surface, the headstock and tailstock of the machine tool withstand the two ends of the mandrel, and the longitudinal drive mechanism drives the machine table, headstock and tailstock to move left and right along the Y-axis direction of the machine tool, so that the spherical center of the workpiece is located on the axis of the sand table ; Start the machine tool servo motor 1 to drive the saddle to move along the X-axis direction of the machine tool, and make the sand disc buckle cover on the surface to be processed on the workpiece; 2) spherical grinding: start the motor to make the sand disc rotate at a high speed around the machine tool X axis Start the frequency conversion motor and drive the mandrel and the workpiece to rotate around the Y-axis of the machine tool at a low speed under the action of the deceleration device. Under the action of the turntable mechanism, the worktable, headstock, tailstock and workpiece all revolve around the Z-axis Reciprocating rotation, and the saddle is driven forward by the servo motor 1.

The invention relates to a large-scale infrared focal plane structure with thermal stress unloading capacity, which comprises a detector chip (1) and the like. The detector chip (1) is mounted on sapphire (2); one lateral surface of a first transitional substrate (31) is a plane, a ring-shaped groove is formed at the middle part of the other lateral surface of the first transitional substrate (31), and the sapphire (2) is adhered to the side of the plane of the first transitional substrate (31); one lateral surface of a second transitional substrate (32) is a plane, a ring-shaped convex structure is formed at the middle part of the other lateral surface of the second transitional substrate (32), the convex structure is abutted with the ring-shaped groove of the first transitional substrate (31) to form a cavity, and a sapphire compensation sheet (7) is mounted in the cavity and is adhered to the first transitional substrate (31); and the second transitional substrate (32) is mounted on a cold plate (4). According to the invention, by the stress unloading structure, a thermal stress and thermal deformation which are generated due to mismatching of thermal expansion coefficients of laminated materials are adsorbed, so that the thermal stress and thermal deformation of a large-scale infrared focal plane are effectively reduced, and reliability of a large-scale infrared focal plane device is improved.

The invention provides an electrical connector and a manufacturing method thereof. The electrical connector comprises a plastic body and a number of first terminals which are integrally connected with the same side edge of a first tape body. A number of first terminal blanking holes are formed in the first tape body. Each first terminal is provided with a first fixing part, a first contact part which is connected with one end, which is away from the first tape body, of the first fixing part, first shoulder parts and a first weld leg located between the first shoulder parts. A number of first weld legs are integrally torn and formed by the corresponding first terminal blanking holes. The first terminals are arranged on the plastic body through the matching of a jig and the first tape body, and then the first tape body is removed. According to the electrical connector provided by the invention, the coplanarity of the terminal weld legs can be improved and ensured, and the corresponding manufacturing and installation process of the electrical connector is improved.

Provided are an encapsulation method for embedding a chip into a substrate and a structure thereof. The method includes: providing at least one chip embedding part inside a substrate, the chip embedding part being a through-hole and/or a recess, the number of chip embedding parts being equal to that of the chip (107) to be encapsulated, the depth of the chip embedding part matched with the thickness of the chip (107) to be encapsulated; embedding the chip (107) into the chip embedding part; wiring on a first contact face and/or a second contact face of the chip (107), and wiring correspondingly on the substrate to form a wiring layer, so that the substrate and the chip (107) are electrically connected to each other.

The invention discloses a display connector and a fabrication method thereof. The display connector comprises an insulation base, a terminal group, an insulation rear plug and a metal shell, wherein the insulation rear plug is used for limiting and hot-melting wrapping the terminal group. In the display connector, the insulation rear plug is additionally arranged at a rear end of the insulation base, a second contact part surface of a lower-layer terminal is in contact with a bottom surface of the insulation rear plug by the insulation rear plug, a first contact part surface of an upper-layer terminal is flush with a boss surface of the insulation rear plug, the insulation rear plug is subjected to hot melting by a jig to form plastic barriers so as to wrap contact parts of the upper-layer terminal and the lower-layer terminals and achieve a fixing effect, the coplanarity and the alignment degree of welding parts of the upper-layer terminal and the lower-layer terminal can be effectively ensured, high stability is achieved, terminal pins are not needed to be adjusted by manual, and the production efficiency is improved; and moreover, after the upper-layer terminal and the lower-layer terminal are assembled, a first pin part and a second pin part are staggered vertically, and crosstalk can be enabled not to be generated in high-frequency signal transmission of the upper-layer terminal and the lower-layer terminal very well.

The invention relates to an automatic phase adjustment unit and an adjustment method. The adjustment unit comprises a self-in-phase control assembly and a self-in-phase lens. The self-in-phase lens isfilled with conductive liquid and non-conductive liquid and is controlled by the self-in-phase control assembly and thus the internal liquid interface of the self-in-phase lens deforms, thereby realizing phase adjustment. According to the invention, the liquid lens based on the dielectric wetting effect is used for realizing effective modulation of the light phase effectively. The adjustment unithas characteristics of mechanical moving part prevention, high self-adaptability, short response time and good integration performance. A novel way of in-phase adjustment of spliced sub mirrors is provided. The automatic phase adjustment unit and an adjustment method are applied to the distributed synthetic aperture optical interference imaging system, thereby reducing the design difficulty of the system and greatly improving the imaging quality.

The invention discloses an advertisement pasting device. The device comprises a first advertisement board and a second advertisement board arranged on the rear side of the first advertisement board, aguiding groove is formed in the front side wall of the second advertisement board, a T-shaped guiding block is arranged on the side wall, adjacent to the guiding groove, of the first advertisement board, and the T-shaped guiding block is arranged in the guiding groove and slides along the guiding groove; a fixing plate for advertisement pasting is arranged on the front side of the second advertisement board, the fixing plate is connected with the second advertisement board through a connecting rod with a telescopic function, and rolling wheels are arranged on the bottom of the second advertisement board. People can adjust the relative position between the first advertisement board and the second advertisement board based on the length of the advertisement to be pasted, so that it is convenient to paste advertisements in different sizes and lengths.

The invention discloses a multifunctional cooler cover. The multifunctional cooler cover comprises an air conditioner compressor installation hole, a generator installation hole, a water pump eddy water cavity, a plurality of engine installation holes and a crankshaft sensor installation hole, wherein the generator installation hole and the air conditioner compressor installation hole are parallel and formed in the upper side of a cooler cover body; the water pump eddy water cavity is formed in the cooler cover body and used for being connected with a water pump; the multiple engine installation holes are perpendicularly formed in the cooler cover body; the crankshaft sensor installation hole is formed in the cooler cover body; and an air conditioner compressor, a generator and the water pump are coplanar through the positions of the air conditioner compressor installation hole, the generator installation hole and the water pump eddy water cavity in the cooler cover body. In this way, according to the multifunctional cooler cover, the functions of multiple parts can be achieved only through one part, the coplanarity of an engine is effectively guaranteed, and the fault rate of a transmission belt is greatly reduced.

The invention relates to a 3DIC chip and a preparation method of the 3DIC chip. The 3DIC chip comprises a chip body which is provided with a window in a first surface thereof; a first bump which is arranged in the window; and a second bump which is arranged on the first surface of the chip body and staggered from the window in position. The first bump is used for transmitting signals, the second bump is used for dispersing stress of the first bump, and the height difference between the first bump and the second bump is smaller than or equal to a threshold. According to the invention, the technical problem of stress concentration and non-uniformity caused by bumps in the existing 3DIC chip is solved, the height difference between the first bump and the second bump is ensured to be within a predetermined range, the coplanarity of a virtual bump and a real bump is ensured, and the cold solder joint risk during flip chip mounting is avoided.

The application discloses a prism and a glass surface stress test device using the prism as a test prism. The prism comprises an import prism part and an export prism part, which are formed integrally. The import prism part and the export prism part are respectively provided with a first working surface and a second working surface, which are coplanar. The prism is provided with at least one groove which is between the import prism part and the export prism part and perpendicular to the first working surface and the second working surface, and the at least one groove forms a diaphragm used for stopping light from being propagated from one side of the first working surface to one side of the second working surface. The import prism part and the export prism part are formed integrally, and the diaphragm is formed on the integrated prism by grooving, so that coplanar working surfaces are ensured on one hand, and on the other hand, the prism has a simple and compact structure and is easy to manufacture.

The sighting device of the bone penetrating fixing needle comprises a sighting rod, a starting rod and a stopping rod, and the sighting rod, the starting rod and the stopping rod are connected together through the top ends to achieve coplanarity and rotation of the three rods; the starting rod and the stopping rod of the aiming rod are provided with an aiming hole, a starting needle hole and a stopping needle hole respectively, the aiming rod, the starting rod and the stopping rod are all telescopic rods, and the positions of the three holes in the same plane are adjusted by adjusting the lengths of the aiming rod, the starting rod and the stopping rod and rotating the three rods, so that it is guaranteed that when a bone penetrating fixing needle is arranged in a penetrating mode, the bone penetrating fixing needle is fixed. The aiming hole, the starting pinhole and the ending pinhole are located on the same straight line. According to the sighting device of the bone penetrating fixing needle, the accuracy of the bone penetrating fixing needle along the straight line in the bone penetrating process is improved, and the starting point and the end point of the bone penetrating fixing needle on the fixing ring and the penetrating point of the bone penetrating fixing needle on the bone can meet the requirement that the starting point and the end point are collinear; and the bone penetrating fixing needle can reach the accurate position of the fixing ring according to the specified position.

The invention discloses a ceiling splicing method for color steel sandwich plates. The ceiling splicing method comprises the following steps that firstly, the N-1th color steel sandwich plate is hoisted; then the Nth color steel sandwich plate is spliced, firstly, the Nth color steel sandwich plate is placed on one side of the N-1th color steel sandwich plate; then, a positioning strip in a middlepositioning assembly is placed between the Nth color steel sandwich plate and the N-1th color steel sandwich plate, and the two sides of the positioning strip are inserted into the color steel sandwich plates correspondingly; then the head of a middle expansion bolt in the middle positioning assembly is installed in a cross beam, the bottom end of a threaded rod of the middle expansion bolt penetrates through the upper side of a middle connecting part and then is in threaded connection with an upper nut, and the upper end and the lower end of a connecting assembly A are connected with the middle connecting part and the positioning strip; and finally, the Nth color steel sandwich plate is hoisted. According to the ceiling splicing method for the color steel sandwich plates, the ends of thesandwich color steel plates can be effectively prevented from inclining downwards, so that the sandwich color steel plates are horizontal, the coplanarity of every two adjacent sandwich color steel plates is guaranteed, and therefore the flatness of a ceiling laid by the sandwich color steel plates is improved.

The invention relates to the field of semiconductor manufacturing, and in particular relates to a sample treatment device. The sample treatment device fixes a sample to be treated in three directions; the part, which is in contact with the sample to be treated, of each fixing device is made from a silicon material, thus fulfilling an aim of fixing the sample to be treated; furthermore, the sample to be treated cannot be damaged by a metal material; meanwhile, one of the three-dimensional fixing devices is a mechanical structure with an adjustable depth, to control the height of the sample, and two fixing devices are used for fixing the position of the sample; a glass plane is used for guaranteeing the coplanar degree of the sample; on such basis, the sample can be fixed, and the coplanar degree of the sample can be guaranteed; therefore, the aim of easiness in grinding is fulfilled, and the sample is difficult to lose.

The invention discloses a battery cell module assembling and forming machine, an assembling method thereof and a battery cell module assembling and forming system. The assembly forming machine comprises: a placement base, wherein a limiting face and a fixing clamping jaw which are located at the first end of a platen of the placement base are arranged on the platen, the limiting face is parallel to the end face of the platen, and the fixing device is provided with a structure for fixing an object abutting against the limiting face to the platen; and a pasting device, wherein the pasting devicecomprises a grabbing clamping jaw, and the grabbing clamping jaw can linearly move from one end of the containing base to the other end of the containing base and can reciprocate in the direction perpendicular to the containing base. According to the scheme, the limiting surface is arranged on the placement seat, so that the battery cells can be effectively positioned and supported, and the firstbattery cell can be effectively positioned in combination with the fixing device, so that errors caused by movement of the first battery cell are avoided; and by adopting the clamping jaw type attaching device, each battery cell can be positioned and unified in position, so that each surface of each battery cell can be kept in a coplanar state, the assembling process is automatically carried out,the efficiency is high, the assembling quality is good, and the assembling consistency is good.

The invention relates to a precision grinding method for the eccentric circle of a crankshaft and a special eccentric tool fixture. The method mainly comprises the following steps that 1, a base of the eccentric tool is connected with a machine tool spindle; 2, an eccentric adjustment sleeve is installed, and an eccentric reference zero position is determined; 3, the crankshaft is installed; 4, the eccentric adjustment sleeve is moved up and down through eccentric adjustment nuts to achieve accurate control over the eccentricity, and eccentric external grinding on one side of the part is performed; 5, the eccentric adjustment nuts are reversely adjusted to move the eccentric adjustment sleeve reversely, it is ensured that the eccentricity is equal to that in step 4, eccentric external grinding on the other side of the part is performed, and finally part machining is completed. Based on a conventional external grinding machine, the eccentricity-adjustable dual-eccentric grinding tool and a part machining process scheme thereof are developed, which are a completely independent design proposed for the first time in China.