8results about How to "Solve thermal deformation" patented technology

The invention provides a cutting device for aluminum alloy door and window machining, and belongs to the technical field of metal cutting equipment. The device comprises a mounting frame, and a limiting sliding groove and a reciprocating lead screw which are arranged on the mounting frame; through cooperation of the cutting and abutting device, the clamping and cleaning device, the lubricating and cooling device, the triggering device and the like, automatic cutting of the aluminum alloy door and window can be achieved, gas sprayed out of an airflow nozzle can blow away cuttings, meanwhile, the temperature of a cutting area can be reduced, a telescopic device can elastically abut against the upper side wall of the aluminum alloy door and window, and the cutting efficiency is improved. A flow guide hole with a port arranged in a big-in and small-out mode can filter lubricating liquid in a liquid storage box, the lubricating liquid can be shaken up through rotation of a cutting wheel disc, along with continuous rising of heat, a pneumatic floating plate can drive a pressure contact piece to make contact with a bearing contact piece under pushing of gas, at the moment, an electromagnetic valve is opened, and the lubricating liquid in the liquid storage box can be cut off; and the lubricating liquid can flow out from the corresponding flow dividing grooves, so that accurate cooling and lubricating treatment can be carried out on tooth spaces of the cutting wheel disc.

This invention relates to the field of pump equipment technology, specifically to a high-temperature dual-suction centrifugal pump combined flushing structure, comprising: a dual-suction centrifugal pump, connected to a sealed cavity and a drive component; a first cyclone self-cleaning heat exchanger and a second cyclone self-cleaning heat exchanger, respectively connected to both ends of the sealed cavity, a cooling water inlet, and a cooling water outlet; a first liquid storage tank and a second liquid storage tank, respectively connected to both ends of the sealed cavity, a cooling water inlet, and a cooling water outlet; and a level gauge, a pressure detection element, and a thermometer, all mounted on the first and second liquid storage tanks. By integrating a self-cleaning structure that utilizes the kinetic energy of the flushing fluid to continuously peel off polymer deposits on the pipe wall, an anti-clogging cooling flow channel with online self-sustaining capability is established, fundamentally eliminating the flushing flow rate attenuation problem caused by localized cooling and coking of aromatics, ensuring that the inner mechanical seal always receives stable and sufficient cooling and lubrication throughout the entire operating cycle.

The invention relates to the technical field of five-axis machine tools, in particular to a five-axis machine tool rotary table driving device which comprises a rotary table, a sliding base and a machine tool body, the rotary table is rotationally connected to the sliding base along the vertical rotation axis, and the sliding base is slidably connected to the machine tool body in the X-axis direction. The linear driving device has the beneficial effects that the detection precision, the driving precision and the driving stability of the linear driving device are improved through the precise alignment of the reference point of the reading head assembly and the rotation center and the cooperative matching of rigid locking and thermal extension self-adaptive release functions realized by the clamp at the tail end of the lead screw; therefore, the adaptability of the linear driving device to use scenes with high precision requirements is improved, and the requirements for high-precision machining in the high-end manufacturing fields such as aerospace and mold manufacturing are met.

This invention provides a rotating feed platform system and its sealing method for high-temperature and high-corrosion environments. The system, located in an external furnace cavity, includes a graphite plate, a rotating graphite shaft, a rotating metal shaft, an inverted "convex"-shaped double-layer jacketed furnace cover, insulation felt, a labyrinth seal device, an air curtain seal device, a magnetohydrodynamic seal, and a drive component. The furnace cover is fitted onto the rotating metal shaft to form a cavity, within which the insulation felt, labyrinth seal device, and air curtain seal device are installed sequentially from top to bottom. This invention achieves decoupling of high-temperature load-bearing capacity and precision transmission through a segmented graphite-metal shaft; it uses gradient insulation formed by the cooling of the insulation felt and the furnace cover jacket to control the temperature of the sealing area to ≤60℃; and it achieves zero intrusion of corrosive gases through a three-stage series seal composed of a labyrinth seal, a reverse inert gas curtain, and a magnetohydrodynamic seal. Therefore, this invention effectively solves the technical problems existing in the prior art of rotating feed platform systems under high-temperature and high-corrosion environments.

The invention provides a seed crystal plate detection device and method.The device is characterized in that a crucible system comprises a crucible body and a crucible cover arranged at the upper opening end of the crucible body in a covering mode, and a supporting piece is located on the upper portion of an inner cavity of the crucible body and fixedly installed on the inner side wall of the crucible body; the seed crystal plate covers the upper opening end of the crucible body; the lower end of the supporting cylinder is lapped on the supporting piece, the upper end of the supporting cylinder extends to a position close to the seed crystal plate, and a measuring gap is formed between the upper end of the supporting cylinder and the seed crystal plate; and the detection piece is graphite paper, is horizontally arranged in the measurement gap and is connected to the seed crystal plate in an attached manner. The method comprises the following steps: installing a detection piece in a measurement gap space, installing a no-load crucible system in a heat preservation chamber, and simulating a crystal growth process by adopting a process which is completely the same as that of crystal growth; and taking out the seed crystal plate after cooling, observing and measuring the deformation amount of the detection piece, and if the deformation amount does not exceed a set deformation threshold value, determining that the seed crystal plate meets the preset production requirement. The device and the method can accurately detect the deformation of the seed crystal plate.

The utility model discloses stretching positioning equipment for manufacturing a motor shell, which comprises a base, a stretching driving mechanism arranged above the base, a central positioning module, a multi-stage positioning mechanism and an elastic compensation component, the multi-stage positioning mechanism and the elastic compensation component are distributed on the base in an annular array, and the base is provided with a guide rail connected with the multi-stage positioning mechanism. And through the multi-dimensional positioning and elastic compensation design, the precision and reliability of stretching machining of the motor shell are remarkably improved. A radial telescopic clamping piece of the center positioning module is matched with a stepped positioning face of the multi-stage positioning mechanism, synchronous and accurate positioning of an inner hole and an end face is achieved, and particularly, due to the adaptive design of a first positioning step face to the thickness of a flange, the problem that deviation is prone to being generated in a traditional single positioning mode is effectively solved. A spiral spring and a damper of the elastic compensation assembly are of a coaxial nested structure, the design of a compensation included angle ranging from 5 degrees to 15 degrees is combined, the tolerance of a workpiece can be compensated in a self-adaptive mode, vibration is buffered, and deformation caused by stress concentration is avoided.

This utility model relates to a positioning device for precision machining of metal castings. It includes a base plate, a support platform for supporting the metal casting, positioning elements for positioning the metal casting, a swing rod for moving the positioning elements, a turntable for swinging the swing rod, a rotating rod for rotating the turntable, and a transmission device mounted on the base plate. The support platform is mounted on the top of the base plate; both ends of the support platform have sliding openings; two sets of symmetrically arranged positioning elements are simultaneously slidably connected to the two sets of sliding openings; the turntable is arranged around the rotating rod. This invention solves the technical problem that existing positioning devices struggle to quickly adapt to the machining needs of castings of different models and sizes while ensuring machining accuracy. Furthermore, the positioning plates of existing devices often use welded or integral structures, requiring the disassembly of numerous related components when replacing the positioning plate to accommodate castings of different shapes, making maintenance and replacement extremely difficult.