48results about How to "High quality and efficient processing" patented technology

The invention discloses a freezing fixation flexible clamp used for numerical control cutting machining of a thin-walled part. The freezing fixation flexible clamp used for the numerical control cutting machining of the thin-walled part comprises a clamping mechanism and a longitudinal positioning mechanism, wherein after the clamping mechanism clamps the thin-walled part, the thin-walled part is positioned on a lathe. The longitudinal positioning mechanism is arranged below the thin-walled part on the lathe and is wholly a container containing phase change material, a vertical support is arranged on the upper surface of the phase change material in a floating mode, and a cooling passage is designed between two opposite lateral walls in the container. Therefore, after the clamping mechanism clamps the thin-walled part, the bottom surface of the thin-walled part contacts the support and applies pressure on the support in the process of contacting, and the support is sunk. At present, cooling gas is injected into the cooling passage through a vortex tube to enable the phase change material to be converted into a solid state, the support is frozen and fixed, and longitudinal positioning of the thin-walled part is achieved. The freezing fixation flexible clamp used for the numerical control cutting machining of the thin-walled part has the advantages of being obvious in effect, convenient to achieve, low in cost, and free of pollution to the environment, and effectively improving efficiency and machining quality in the process of numerical control cutting machining of a weak-rigidity process system.

The invention provides a numerical control processing method for titanium alloy ultra-large and complex thin-walled parts, which includes the following steps: using a clamp with adjustable support and a modular flexible vacuum clamp of a numerical control machine tool to realize the positioning and clamping of the front and back sides of the part ;A stress-free clamping method for super-large parts is adopted to ensure that there is no clamping stress during the clamping process of the parts; according to the principle of datum coincidence, the establishment of the processing coordinate system is realized by using the automatic online detection function attached to the equipment; The sequence, milling method, cutting amount, etc., formulate the process flow of rough machining, semi-finishing, and finishing; use the equipment's own online detection function to automatically detect the machining accuracy and process compliance of the parts. The method proposed by the invention can realize high-quality and high-efficiency machining of ultra-large thin-walled parts, and effectively controls the deformation of the parts and the out-of-tolerance of geometric dimensions caused by human factors.

The invention relates to a curved-surface machining cutter track planning method using cutting force fluctuation as a constraint, which belongs to the technical field of the high-efficiency milling processing for complicated curved-surface parts. According to the method, on the basis of cutter location point data obtained by an equal-residual-height method, an optimal feeding ling spacing value and an optimal feeding step length are determined, thereby realizing a cutter location grid unit division based on a cutter location grid node. With fitting of a cutter location grid unit plane, a cutter location grid node Z coordinate is determined by combining an adjacent associated cutter location grid unit. And then a cutter location grid node normal vector is calculated; and with the cutting force fluctuation during the processing process as a constraint, a curved-surface processing cutter track is planned by using the cutter location grid node as a cutter location point according to a fundamental principle of normal vector included angle minimization between adjacent cutter location points, so that the high-quality and high-efficiency curved surface processing is realized. The method has the high adaptability to the local complicated geometrical features; and high-quality and high-efficiency curved surface processing is realized.

The invention discloses an electric-eddy-current rotation-transformation rigidity damper which comprises a mass block, a supporting frame, bolts, cover plates and a permanent magnet, wherein the mass block is mounted in a cylindrical groove of the supporting frame; the cover plates are fixedly arranged on the upper surface of the supporting frame through the bolts; meanwhile, the positions of the mass block in the supporting frame are fixed by the bolts through the cover plates; the permanent magnet is mounted in a cylindrical groove of the mass block. The electric-eddy-current rotation-transformation rigidity damper serves as a vibration reduction device in the field of machining, can effectively inhibit the cutting chatter of a thin-wall part, and guarantees a high-quality and high-efficiency machining process of the thin-wall part; when the mass block and the supporting frame generates relative motion, the electric-eddy-current rotation-transformation rigidity damper generates an electric eddy current effect, so as to obstruct the vibration of the supporting frame, and further inhibit the vibration of the thin-wall part; the electric-eddy-current damping is non-contact damping, and can inhibit multi-stage vibration modes; the electric-eddy-current rotation-transformation rigidity damper can accurately regulate the rigidity of the damper, so as to more conveniently and quickly match the rigidity of the thin-wall part, and more effectively inhibit the vibration of the thin-wall part; the electric-eddy-current rotation-transformation rigidity damper is simple in structure, convenient to mount and low in cost, has no pollution to an environment, and is wide in scope of application.

The invention discloses a method for precise machining of aluminum-based silicon carbide threads. The method comprises the following steps: installing an ultrasonic longitudinal vibration machining tool handle on a machine tool, connecting an ultrasonic power supply to the ultrasonic longitudinal vibration machining tool handle, and The workpiece is clamped on the machine table; a 2-10mm drill bit is installed at the end of the ultrasonic longitudinal vibration machining tool holder to complete the thread bottom hole processing of the workpiece; the 2-10mm drill bit is replaced with a diamond-coated carbide tool for thread processing, Turn on the ultrasonic power supply; adjust the frequency of the ultrasonic power supply and the amplitude of the diamond-coated carbide tool mounted on the end of the ultrasonic longitudinal vibration processing handle to meet the separation conditions of the ultrasonic process; start the milling machine, and the diamond-coated carbide tool will press the set spiral The threaded hole of the workpiece is helically milled by the trajectory; the ultrasonic power is turned off, and the chamfering of the thread entrance and exit of the workpiece is milled out. The invention improves the quality of the surface of the threaded hole and the entrance and exit of the hole, improves the processing efficiency and reduces tool wear at the same time.

The invention belongs to the technical field of machining and specifically relates to a method for machining an AF1410 steel part before quenching. According to the method, high-quality and high-efficiency machining is carried out on the AF1410 steel part before quenching strengthening through a shallow cutting-quick feeding equal-height layer reduction cutting process; when a deep cavity structure exists in the part, a ring cutting and axial layered rough milling-finish milling machining method is adopted so as to solve the problems of vibration of a cutting tool and chatter marks on the surface of the part. Through the method for machining the AF1410 steel part before quenching, the machining efficiency is improved by 3-4 times, the cutting temperature is effectively reduced, the servicelife of the cutting tool is prolonged, the quality of the part is improved, the problems that excess cutting temperature, serious work hardening, poor part quality and the like are solved, and high-quality and high-efficiency machining of the AF1410 steel part is realized.

The invention relates to a method and a device for preparing a silicon-based three-dimensional (3D) microstructure. The method comprises the following steps: carrying out laser machining, chemical corrosion and combined machining on a silicon wafer covered with a picture mask; performing laser scanning and cutting along a preset track of the picture mask; simultaneously chemically etching a laser machining surface by utilizing a chemical solution; and finishing the machining surface. The device for implementing the method mainly consists of a laser, the picture mask, a focusing lens, a work box, a worktable, a liquid collecting tank and a chemical solution circulating and filtering system, wherein the work box is connected on the worktable, a cavity is arranged inside the work box, and a window is arranged on one end of the work box; the picture mask is adhered to the upper end face of the silicon wafer and is placed in the cavity; the liquid collecting tank is placed below the silicon wafer; the chemical solution circulating and filtering system is communicated with the cavity and the liquid collecting tank; the focusing lens and the laser are placed at one side of the window; and lasers are focused on the silicon wafer through the focusing lens and the window. The silicon-based 3D microstructure obtained by the method has the advantages of large height-width ratio, good perpendicularity and good surface quality.

The invention relates to a multi-adaptive quick-installation air-cooled dedusting equipment with accompanying air-cooling and dust removal equipment, which belongs to the field of cutting processing and relates to a multi-adaptive quick-installation air-cooled dedusting equipment for drilling and milling processing. The equipment consists of five parts: spindle clamping mechanism, connecting rod mechanism, bearing connection mechanism, axial expansion mechanism and dust treatment mechanism. The equipment is connected with the tool handle through the axial connection mechanism and installed on the machine tool. The axial telescopic mechanism and the processing surface form a cavity, and the gas flow generated by the negative pressure vacuum cleaner is used to form a negative pressure in the cavity, and the telescopic mechanism is fixed with the machine tool spindle shell with the linkage mechanism, so as to avoid the rotation of the spindle and the rotation of the equipment. Workpiece interference, ultimately enabling fast collection and disposal of swarf. This equipment is suitable for drilling and milling, which can effectively reduce the harm of chips to human body and machine tool equipment, and improve the processing quality at the same time, which is practical. For multiple types of machine tools, versatility can be achieved as long as the toolholders are of the same specification.

The invention discloses a method for predicting the burr length of a fiber-reinforced composite material processed by a fillet cutter, and belongs to the technical field of composite material processing. In the implementation process of this method, the geometric dimension and shape profile data of the fillet tool are firstly measured and the tool-workpiece profile geometric model is established. The fiber direction angle θ is used to establish the geometric model of the interaction between the tool fillet and the unbroken fiber in the fiber arrangement plane, and on this basis, the first fracture position of the unbroken fiber is solved and the maximum theoretical burr length is calculated. According to the burr generation mechanism of the fiber reinforced composite material, the method establishes a burr length prediction model during the processing of the fiber reinforced composite material, and the method involves comprehensive and complete content and is easy to operate.

The invention provides a quartz hemispherical resonator in-situ shape detection ion beam polishing atom manufacturing equipment and method, the equipment includes a numerical control system, a micro-scale mobile platform device installed on a machine tool, and an in-situ shape detection installed on a machine tool base device, frequency difference detection device, ion beam processing device, transmission device and worktable, the numerical control system receives the shape accuracy and profile of the quartz hemispherical resonator measured by the in-situ shape detection device and the quartz The frequency difference of the hemispherical resonator is accurately calculated, and the generated instructions are sent back to the micro-scale mobile platform device, which drives the fixture to move, and at the same time controls the ion beam processing device to perform precise machining on the quartz hemispherical resonator. The invention can significantly reduce the reject rate, and can precisely process the quartz hemispherical resonator with high quality and high efficiency.