8results about How to "Guaranteed manufacturing accuracy" patented technology

This invention provides a core box mold for casting large motor bases, belonging to the field of casting mold technology. The core box mold is manufactured based on the five-part structure of a large motor base sand core. The core box mold includes an inner cavity air hole sand core 1# core box for manufacturing inner cavity air hole sand core 1#, an outer cavity sand core 2# core box for manufacturing outer cavity sand core 2#, an outer cavity sand core 3# core box for manufacturing outer cavity sand core 3#, an outer cavity sand core 4# core box for manufacturing outer cavity sand core 4#, and an outer cavity sand core 5# core box for manufacturing outer cavity sand core 5#. These five core boxes are independent of each other. This invention provides a corresponding core box mold comprising five parts for the new integrated sand core structure of large motor bases, solving the manufacturing problem of the new integrated sand core and creating conditions for achieving boxless casting of the base.

The utility model discloses a kind of monitor liquid crystal box overturning clamping devices monitor liquid crystal box overturning clamping devices, including clamping support, both sides of the clamping support are symmetrically equipped with sliding guide rail seat, the sliding guide rail seat is slidably installed with sliding clamping frame seat by linear sliding guide, sliding clamping frame seat is fixedly installed with sliding clamping frame;Sliding guide rail seat is also equipped with clamping drive motor, and sliding clamping frame is driven by screw nut pair of clamping drive motor;Opposite position is provided with alignment clamping frame in the sliding clamping frame, and the alignment clamping frame and sliding clamping frame constitute clamping pair, and the alignment clamping frame is installed in alignment platform. This clamping type overturning machine is stable in grabbing, and clamping is reliable. The clamping device has the characteristics of stable clamping, high overturning efficiency.

This invention discloses a radio frequency (RF) neutralizer system and an integrated system of ion source and RF neutralizer. The RF neutralizer system includes: a neutralizer body, comprising a first reaction chamber, an RF coil, and an electrode structure. The RF coil is located on the outer wall of the first reaction chamber and is used to receive RF energy to ionize the process gas within the first reaction chamber. The electrode structure is located inside the first reaction chamber and is used to eject electrons from the first reaction chamber. A first RF driving power supply includes a first detection and control unit, a first DC power supply unit, and a first driving amplification unit. The first detection and control unit is used to detect first current information and first voltage information at the output of the first driving amplification unit. The first driving amplification unit is integrated into the neutralizer body and is disposed together with the neutralizer body within a vacuum process chamber. This invention ensures the fabrication accuracy of semiconductor devices and eliminates the need for impedance matching devices.

The invention discloses a middle base assembly tool of a filling machine and a middle base manufacturing method, and aims to provide the middle base assembly tool which can reduce the mold opening manufacturing cost of a middle base, is simple in structure and convenient to position, can guarantee the assembly positioning precision of all parts of the middle base, and can improve the production efficiency of the middle base. According to the middle base assembly tool of the filling machine and the manufacturing method of the middle base, the manufacturing precision of the middle base is better guaranteed. A middle base assembly tool of a filling machine comprises a supporting base which comprises a coaxial positioning piece and three cross beams sequentially distributed in the circumferential direction of the coaxial positioning piece, and one ends of the three cross beams intersect and are fixed to the coaxial positioning piece; the supporting assembly comprises three supporting blocks in one-to-one correspondence with the cross beams, and the supporting blocks are fixed to the upper surfaces of the corresponding cross beams; the three positioning assemblies are in one-to-one correspondence with the cross beams and comprise positioning blocks fixed to the upper surfaces of the corresponding cross beams, and positioning grooves are formed in the upper surfaces of the positioning blocks.

The invention provides a flexible detection device and method for the direction of a drainage hole of a sliding rail sleeve. The device comprises a base, a transparent cover, a driving assembly, a rotating table, a loading and unloading assembly and a plug. The transparent cover is connected to the base and is provided with at least one tolerance ring pattern; the driving assembly is mounted on the base; the rotating table is connected to the output end of the driving assembly, and a plurality of loading and unloading assemblies are arranged on the rotating table in the circumferential direction; the plug is in threaded connection with the drain hole and provided with a laser pen, and the axis of the laser pen coincides with the axis of the drain hole. According to the invention, the plug with the laser pen is mounted in the drain pipe joint of the slide rail sleeve, so that visible laser indicating light replaces invisible drain hole pointing, and whether the drain hole pointing of the slide rail sleeve is qualified or out-of-tolerance degree is visually and quantitatively confirmed by combining a calibrated tolerance ring pattern of the drain hole pointing on the transparent cover; compared with an existing qualitative evaluation method of manual operation, the method is smaller in detection error and higher in efficiency.

The application belongs to the technical field of shaft sleeve processing, and discloses a processing method of a marine shaft sleeve and the marine shaft sleeve. First, the shaft sleeve original piece is installed on a processing device, and the processing angle of a processing tool is adjusted, so that the processing tool is used for three-time cutting processing of the shaft sleeve original piece with different angle schemes and different cutting processing parameters of cutting speed, feed rate and cutting depth, to form a shaft sleeve inner hole. Then, a polishing device is used to polish the hole wall of the shaft sleeve inner hole with a preset processing scheme, until the hole diameter of the shaft sleeve inner hole is equal to the inner diameter of the marine shaft sleeve, and the roughness of the hole wall of the shaft sleeve inner hole is the preset roughness, so that the shaft sleeve original piece is formed into the marine shaft sleeve. The marine shaft sleeve is processed by using the processing method, so that the labor amount of workers can be reduced, the processing cost and the labor cost can be reduced, and the working efficiency of the processing of the marine shaft sleeve can be improved.

This application relates to a low-power, high-reliability Schottky chip with self-adjusting injection efficiency, belonging to the field of semiconductor processing technology, comprising: a substrate layer, wherein the substrate layer is highly doped with N. + A substrate layer for reducing the on-resistance of the chip; an epitaxial layer disposed on the substrate layer; a Schottky junction region located on the epitaxial layer; and a Speed ​​structure region containing several small P-type transistors. ++ Grid; P + The protective ring, the P + The junction protection rings are located at both ends of the Schottky junction region; N ++ A junction cutoff ring is located at the chip terminal; multilayer passivation regions are used to enhance the product's resistance to high temperature, high humidity, and radiation; front and back metal electrodes are used for electrical connections. This application employs highly doped N... + The substrate layer effectively reduces the on-resistance of the chip, thereby significantly improving the current transmission efficiency.

The application provides a steel tower segment assembling method, and relates to the technical field of bridge construction process.The steel tower segment assembling method divides the steel tower segments which need to be manufactured separately into a middle anchor chamber module, a side box chamber module and a side anchor chamber module, can be manufactured simultaneously, effectively shortens the manufacturing time of the steel tower segments manufactured separately, and effectively improves the manufacturing efficiency of the steel tower segments; meanwhile, in the assembling process, the side anchor chamber module is installed by taking the middle anchor chamber module as a reference, the side box chamber module is installed by taking the middle anchor chamber module and the side anchor chamber module as references, the preliminary assembling of the steel tower segment can be completed, the assembling precision of the steel tower segment is relatively reliable by sequentially assembling in the same direction; finally, the middle anchor chamber module, the side anchor chamber module and the side box chamber module are sequentially welded and fixed, the steel tower segment with high manufacturing precision which can meet the construction and installation precision of the whole steel tower is obtained, and the overall construction quality of the bridge and the use stability after the completion of the project are ensured.