136results about How to "Improve workpiece quality" patented technology

A machine tool for machining a workpiece is provided with a cutting tool holder for holding a cutting tool and a rotation mechanism for holding the workpiece. One or both of the cutting tool holder and the rotation mechanism are movable on multiple axes so that the cutting tool is movable relative to the workpiece in multiple axial directions. A control device is provided for controlling the movement of one or both of the cutting tool holder and the rotation mechanism to synchronously vibrate the workpiece and the cutting tool relative to each other at a low frequency in multiple axial directions.

The present invention provides a manufacturing method for a machine tool having a human-machine interface and a program with predetermined manufacturing conditions. The manufacturing method includes (1) setting, via the human-machine interface, one or more specific manufacturing areas of the workpiece and specific conditions for the specific manufacturing areas; (2) determining by the controller whether the manufacturing of the workpiece is performed at one of the specific manufacturing areas; (3) performing the manufacturing of the workpiece under one of the specific conditions corresponding to the one of the specific manufacturing areas via the controller and monitoring continuously the manufacturing status of the machine tool if the manufacturing of the workpiece is performed at one of the specific manufacturing areas; and (4) performing the manufacturing of the workpiece according to the predetermined manufacturing conditions via the controller if the manufacturing of the workpiece is not performed at the specific manufacturing areas.

A forging device for molten metal includes first and second die bodies that are linked by first and second power arms to move back and forth in a cavity of a die base so as to open and close a workpiece shaping space defined between first and second die faces of the first and second die bodies. When the workpiece shaping space is opened, a molten metal is poured, and then the workpiece shaping space is closed to cast a semi-finished workpiece. After that, the first and second power arms axially press and forge the semi-finished workpiece in the workpiece shaping space into a high-strength workpiece. The high-strength workpiece is shaped by casting and forging in the same process.

The invention relates to the field of machining, in particular to a method for predicting and compensating a machining deformation error of a miniature trough. A device form predicting and compensating the machining deformation error of the miniature trough comprises a machine tool working table, a micro milling cutter, a miniature groove piece, a dynamometer and a support, and the dynamometer and the support are arranged on the machine tool working table in parallel. According to the method, a displacement sensor is utilized to online monitor machining deformation of the miniature groove piece in real time, a sensing working table is utilized to transmit the adjusting information so as to conduct real-time adjustment on the miniature groove piece, uncertain factors caused by manual adjusting and radial undercut caused by workpiece deformation are eliminated, and accordingly the machining accuracy and the workpiece quality are improved. An adjuster is independent of a machine tool control system, a tool path planed by an existing program cannot be affected, the programming time is saved greatly, and accordingly the production efficiency is improved.

The invention relates to a metal processing machine tool, in particular to a vertical finish-milling machine which comprises a gantry column, a transverse beam, a main shaft box mechanism and a working table mechanism, wherein balance oil cylinders are respectively and symmetrically arranged on two sides of a ram of the main shaft box mechanism; one end of each balance oil cylinder (the shaft end of the oil cylinder) is fixed on the ram; the other ends of the balance oil cylinders (the body ends of the oil cylinders) are fixed on a drag plate. When the ram drives a main shaft box to move upwards and downwards, the situation that a cutter drops off can be avoided no matter what the moving amplitude is; moreover, when a milling cutter moves suddenly, the moving speed of the main shaft box can be effectively buffered by the balance oil cylinders; due to adoption of the balance oil cylinders on two sides of the ram, the ram is relatively stable, the processing precision of the finish-milling machine can be relatively high, and a processed workpiece is relatively good in quality. After the guide tracks of a working table base are lengthened, the working table can be completely supported, and the bearing property of the working table is improved. Three transverse beam guide tracks are provided, so that abrasion of the guide tracks is alleviated, and the service lives of the guide tracks are prolonged.

The invention relates to a laser heating auxiliary arc striking micro-explosion processing method and a laser heating auxiliary arc striking micro-explosion processing device for an engineering ceramic material, and belongs to the technical field of the processing of hard and brittle materials. The method comprises the following steps of: focusing a laser beam, and then, obliquely irradiating the laser beam on the surface of a work piece to be processed; vertically aligning a jet nozzle of an arc striking micro-explosion generator with the surface of the work piece downwards; and enabling the work piece to continuously perform a feed movement along with a working platform, carrying out laser preheating first, raising the temperature of a micro cell to the softening temperature of the ceramic material, and then, carrying out arc striking micro-explosion processing until the processing of the engineering ceramic work piece to be processed is finished. The system mainly comprises a special pulse power supply, a pulse controller, a numeric control three-dimensional working platform, a micro-explosion generator, a gas supply device, a medium-low power laser apparatus, an optical fiber and a laser head. By using the laser heating auxiliary arc striking micro-explosion processing method and the laser heating auxiliary arc striking micro-explosion processing device, the material removal efficiency of the arc striking micro-explosion processing method is improved; the processing damage is reduced; and the practical application of the arc striking micro-explosion processing method in the processing of the engineering ceramic material is further promoted.

The invention relates to a machining process for a deep hole thin-walled workpiece. The machining process for the deep hole thin-walled workpiece comprises the steps that S1, primary appearance roughmachining is carried out, wherein a disc milling cutter is adopted to carry out primary rough machining on the appearance of a raw material, surface materials are removed, the milling cutter is used for removing residual materials at corners so that the external shape can be formed; S2, a deep hole is formed, wherein the two end portions of the raw material are drilled through a drill bit; S3, aging treatment is carried out, wherein the workpiece obtained in the step S2 is put into an oven to be subjected to high-temperature treatment, and internal stress is removed; S4, secondary appearance rough machining is carried out, wherein the milling cutter is used for carrying out secondary rough machining on the appearance of the workpiece obtained in the step S3; S5, appearance finish machiningis carried out, wherein the milling cutter is used for carrying out finish machining on the appearance of the workpiece obtained in the step S4; S6, the deep hole is machined, wherein a boring cutteris used for carrying out semi-finish machining and finish machining on the deep hole; and S7, the thin wall is machined. The problems that during machining of a large deep hole thin-walled workpiece,deformation and shaking cutter lines appear are solved, the machining efficiency and the workpiece quality are improved, and the defective percentage is reduced.

The invention relates to a plane edge-pressing and semi-fine blanking device and a method. The device is provided with a plane pressure plate and a concave die, when a workpiece is punched, the plane pressure plate needs to enable edge-pressing force to press on the outer edge of a profile of the workpiece on a workpiece blank, and the edge-pressing force can generate great friction force betweenthe surface of the workpiece blank and the plane pressure plate and between the surface of the workpiece blank and the concave die, so as to prevent the material of the workpiece blank from flowing out of the profile of the workpiece. The device is matched with punching force, three-dimensional pressure stress is generated in the material of the workpiece blank in an extrusion zone, and plastic flow is generated, so as to enable the numerical values of the pressure stress in the three-dimensional directions to tend to be consistent, enable the material of the workpiece blank in the profile ofthe workpiece to be in the hydrostatic pressure state and have a maximal plastic deformation range, reduce a region for generating tensile stress in a shearing deformation zone and prevent the emergence of cracks on the surface of a cross section of the workpiece. By using the plane edge-pressing and semi-fine blanking device and the method, an ordinary punch can be used, the processing of a die is simple, a pressurization region on the workpiece blank can not cause damages, the processing cost is low, the quality of the workpiece is high, and the device and the method are convenient to popularize and apply in the punching industry.

The application discloses a high temperature support plate self-locking nut processing technology in the mechanical technology field. The high temperature support plate self-locking nut processing technology includes concrete steps: (1) preparing material; (2) blanking; (3) stretching for forming: fixing a mold for high temperature alloy sheet material, pulling two ends of the mold according to shape of a product for repeated stretch forming, and adding lubricant between the mold and the high temperature alloy sheet material when necessary; (4) performing machining for fine trimming; (5) performing linear cutting; (6) performing thread tapping; (7) performing in-process inspection; (8) performing heat treatment: performing solid dissolution and aging treatment, wherein in solid dissolution, setting solid dissolution temperature at 900+/-10DEG C, keeping solid dissolution time for 60min, and then adopting oil cooling; in aging treatment, setting aging temperature at 710+/-10DEG C, keeping aging time for 15-17h, and then adopting air cooling; (9) blasting sand; (10) detecting fault; (11) performing surface treatment: plating silver on the surface of the high temperature alloy sheet material after being processed through the above steps; (12) inspecting. The high temperature support plate self-locking nut processing technology solves the problem that cutter consumption is high in production of support plate self-locking nuts in the prior art.

The invention discloses a SLM metal additive manufacturing defect real-time detection method and a detecting device. In existing metal additive manufacturing equipment, an ultrasonic laser generator and a signal receiver are integrated into a same device, a workpiece is detected in real time in the manufacturing process by ultrasonic laser, a receiving device receives displacement waves, the simulation processing is firstly performed and a laser cleaning process is obtained, and geometric information and position information of internal defects of the workpiece are obtained. Lasers do not needto be additionally arranged, and original processing laser is improved. By adjusting the processing laser, laser cleaning of the surface of the workpiece is achieved to improve the surface roughnessof the workpiece, and the instant processing of pore defects can be realized to improve the quality of the workpiece. The detecting device solves the problems that the detection precision of the traditional detection technology is not high, the workpiece detection process is separated from the production process, and the pore defects cannot be processed online after being detected, the high-precision online non-destructive detection and processing are realized, and the SLM additive manufacturing product quality is improved.

A device for shaping a workpiece is provided. The device includes at least one first and one second component between which the workpiece to be shaped can be molded under the effect of heat. The design and/or the material properties of the first and/or the second component are selected such that the component's thermal expansion is different in different directions.

The invention discloses a bidirectional grinding machine which comprises a machine frame, a holding device mounted on the machine frame and used for holding a workpiece, and a holding drive device used for driving the holding device to rotate, and further comprises a plurality of grinding wheels used for grinding the workpiece, a plurality of feed drive devices used for driving feeding of the plurality of grinding wheels respectively, and a plurality of rotation drive devices used for driving rotation of the plurality of grinding wheels respectively and capable of controlling rotation directions of the grinding wheels respectively. The bidirectional grinding machine enables the rotation directions of part of the grinding wheels to be the same as the rotation direction of the holding device, and the rotation directions of part of the grinding wheels to be opposite to the rotation direction of the holding device; two opposite ridges formed by holes or grooves successively become an entering face and a leaving face of each rotating grinding wheel, and alternate grinding in two directions can remove burrs on the two ridges at the same time, so that the working efficiency and the workpiece quality can be improved.

The invention discloses a multi-wire sawing method and a multi-wire sawing machine. The multi-wire sawing method uses at least two parallel sawing wires wound on a wire roller, and at least two workpieces, wherein the workpieces are staggered at the upper and lower sides of the sawing wires, and respectively move to the directions of the sawing wires for sawing. The multi-wire sawing method uses a vertical compound sawing mode for eliminating wire arches; and the wire arched generated in sawing are shorter, so that the wire marks of the sawing wires left on the surfaces of the workpieces are reduced, and the workpiece quality is improved.

Described herein is a system for generating a plurality of coolant beams that converge at a focal point for advanced heat transfer. The system utilizes a variable strength activation of coolant and superposition of coolant beams generated by multiple actuators for increased cooling strength increase, thereby avoiding activation saturation in conventional systems. Each coolant beams is activated to carry an ultrasonic or megasonic vibration component. In addition, the system includes a coolant activation assembly having a plurality of actuators for generating the coolant beams. The coolant activation assembly further includes supporting components for positioning the actuators so that all of the coolant beams generated by these actuators converge at the focal point. Experimental results show that the system provides significantly improved workpiece quality in a machining process. Compared with the most advanced existing system, this system offers a further improvement of up to 12.30% on surface roughness of the finished workpiece.

The invention discloses a molten pool temperature detection system and method for a selective laser melting 3D printer. Under the situation that an original equipment structure and an original opticalpath system of the SLM 3D printer are not changed, photoelectric information of a molten pool in the machining process is obtained only by additionally arranging a narrow-band optical filter, a photoelectric detection circuit and a data acquisition and processing system module at an interface of a coaxial spectroscope, and real-time closed-loop control over the temperature of the molten pool is achieved through acquisition, operation and processing of the information. According to the molten pool temperature detection system and method, higher printing quality and efficiency are obtained, theapplication range of the SLM 3D printing technology is further widened, the detection speed is high, the control effect is good, the compatibility with original equipment is high, and the cost performance of application implementation is high.

The invention discloses a method and a system for processing an immersed workpiece by double laser light. The method includes focusing the laser light A with the wavelength of 1064 nm on the surfaces of the workpiece in water and locally softening the heated workpiece; focusing the laser light B with the wavelength of 10640 nm on the water above the workpiece; breaking through the water by the aid of the laser light B to generate impact waves, enabling the impact waves to act on locally softened regions of the surfaces of the workpiece and removing softened materials so as to groove and process the workpiece. A focus point of the laser light A and a focus point of the laser light B are distanced from each other by hundreds of micrometers. Solid for generating the laser light A and the laser light B and a laser head of a CO2 gas laser device of the system are positioned above a water tank, the center line of laser beams A is a plumb line, the center line of laser beams B intersects with the laser beams A at the focus point of the laser light A on the upper surface of the workpiece, and an intersection angle of the center line of the laser beams B and the laser beams A is 10-30 degrees. The height of a worktable can be adjusted. The thicknesses of water layers on the surfaces of the workpiece are 1-3 millimeters. Compared with laser melt cutting processing, the system and the method have the advantages that the heating temperature of the laser light A is lower than melting points of the materials, accordingly, influence of local overheating can be reduced, and the quality of machined finished products can be guaranteed.

The invention relates to a tool special for submerged-arc welding. The tool comprises a liner and a base. The bottom of the liner is provided with a connecting seat, a plurality of mounting holes are formed in the connecting seat, and connecting columns are arranged in the mounting holes. Springs are arranged outside the connecting columns, a groove is formed in the surface of the liner, the section of the groove is in an arc shape, a cavity is formed in the liner, a water inlet is formed in one side of the cavity, and a water outlet is formed in the other side of the cavity. First pipe flanges are arranged on the water inlet and the water outlet, the water inlet is connected with a water inlet pipe, the water outlet is connected with a water outlet pipe, second pipe flanges are arranged between the water inlet pipe and the corresponding first pipe flange and between the water outlet pipe and the corresponding first pipe flange, and a circulating water pump is mounted between the water inlet pipe and the water outlet pipe. The tool is reasonable in structural design, a machined workpiece is convenient to cool, pipe mounting stability is improved, and the machining efficiency of submerged-arc welding and workpiece quality can be improved conveniently.