41results about How to "Improve milling accuracy" patented technology

In relatively thick samples for electron microscopy imaging, details of interest are often located in the bulk of the sample, so that they cannot be directly imaged in the form of a SEM image. According to the invention, so as to expose the cross-section containing the details of interest, the frozen sample is subjected to ion milling, in such a manner that the desired cross-section is exposed. Thereafter, the exposed cross-section is further eroded in a controlled manner via sublimation, whereby the detail of interest is approached in a very accurate manner, and its fine details become visible. Hereafter, the finally desired SEM image can be made. By repetition of this process, a large number of successive cross-sections can be imaged, so that a spatial representation of the sample is obtained.

The invention discloses a movable double-robot automatic milling type intelligent flexible production line and a running method thereof. The production line comprises free moving platforms, a millingprocessing robot, a binocular vision robot, a laser cutter aligning device, an industrial robot control cabinet, a main control cabinet, a moving panel and a cooling machine, wherein the binocular vision robot and the industrial robot control cabinet are arranged on a first free moving platform; the milling processing robot, the main control cabinet and the cooling machine are mounted on a secondfree moving platform; two movable robots are correspondingly used for milling and measuring online; the binocular vision robot is loaded to a preset station through the first free moving platform; a binocular vision measuring instrument at the tail end of the binocular vision robot is used for scanning and detecting a workpiece to be processed so as to obtain processing milling tolerance; and themilling processing robot is loaded to perform milling through the second free moving platform. The production line realizes highly intelligent control, and is large in working space and high in positioning accuracy; the product processing quality is high, and the stability is high; the product processing efficiency is high; and a complex milling processing task can be performed.

A method for processing a hard tooth surface of a medium-precision large-modulus cylindrical gear is characterized in that a double-parameter non-instantaneous-pole enveloping method is carried out to perform tooth surface generating enveloping and hard milling, namely, a cutter is used for performing weft enveloping along the circumference contour direction of the gear and then performing warp enveloping along a helical line direction of the tooth surface of the gear. According to the method, a large-diameter disc milling cutter, which is provided with a large-space chip storing groove and is high in cutting stiffness and convenient and reliable in blade fixing manner, is utilized, so that a cutter disc is outstanding in comprehensive high-speed hard milling performance; a coated carbide blade is used for achieving high-speed hard milling of hardened steel; the form of the geometric structure of the blade can effectively improve the dynamic stiffness and thermal stiffness and can also reduce the influence of force and heat on a workpiece and the blade, and as a result, the durability of the blade can be improved.

The invention discloses a processing method of a round elastic body for a sensor. The processing method of the round elastic body for the sensor includes the following steps: firstly, preparing a section of cylindrical steel bar, secondly, roughly lathing three sections of outer circles to the steel bar, thirdly, numerical control rough-milling a plane, fourthly, numerical control finish-milling a plane, fifthly, drilling a hole, sixthly, milling a patch groove, seventhly, plating nickle, and eighthly, polishing a nickle plate at the patch groove. The processing method of the round elastic body for the sensor has the advantages that the problems of low processing quality and low processing accuracy in the existing processing methods are solved, clamping stability is improved by mounting a filling block under a stepped shaft when milling three sections of squares, milling accuracy is improved greatly, and service life of a cutter is prolonged.

The invention discloses a clamp for milling a spiral groove on the surface of a shaft type work piece. The clamp comprises a milling machine table, wherein one end of the milling machine table is provided with a universal indexing head, and the other end of the milling machine table is provided with a locating tailstock; the universal indexing head and the locating tailstock are located at the same horizontal straight line; the milling machine table is provided with self-regulating dampers; the self-regulating dampers are located between the locating tailstock and the universal indexing head; the locating tailstock comprises a centre, a crank and a base; the base is arranged on the milling machine table; the base is provided with the centre; the centre is connected with the crank; and the number of the self-regulating dampers is two. The clamp for milling the spiral groove on the surface of the shaft type work piece disclosed by the invention is simple to operate, and can reduce milling difficulty so as to reduce milling time and milling cost; the clamp is suitable for batch machining; and the self-regulating damper can effectively reduce the vibration caused by the contact of the shaft type work piece and a tool, thus improving milling precision.

The invention provides a control method of a steel rail milling work and relates to a method for repairing a steel rail, aiming at providing the control method of the steel rail milling work, which has high milling precision and high milling efficiency, little pollution and low energy consumption. The control method comprises the following steps: S1: acquiring steel rail outline parameters; S2: carrying out tool setting; S3: initializing an auxiliary positioning device; and S4: carrying out the milling work, and starting a main shaft motor and a vehicle body. Under the driving of the vehicle body, a steel rail milling system moves at a constant speed along the direction of the steel rail, a right contact piece and a left contact piece are controlled to be in contact with the upper surface of the steel rail, and a lateral contact piece is controlled to be in contact with the lateral surface of the steel rail; a Z-directional sensor is used for measuring the height of a cutter disc in the Z direction in real time; a Y-directional sensor is used for measuring the distance between a finger tip of the lateral contact piece and the cutter disc in the Y direction in real time, so that a road condition is judged in real time; and furthermore, the cutter disc is continuously adjusted by a milling executing unit according to the road condition, and thus milling repairing of the steel rail is realized.

The invention discloses a milling device for metal saw blade processing. The milling device comprises an operation table, wherein a control table is fixedly connected to one end of the upper part of the operation table, a case is fixedly connected to one side of the control table, a motor is mounted in the case, a milling cutter is connected to a fixing nail at the output end of the motor, a feeding mechanism is arranged at one end of the upper part of the operation table far away from the control table, the feeding mechanism is fixedly connected with a connecting arm, the connecting arm is fixedly connected with a clamp, a saw blade is fixedly connected into the clamp, the upper portion of the control table is fixedly connected with a cooling mechanism, the end, away from the control table, of the cooling mechanism is located above the milling cutter, a collecting mechanism is arranged on one side of the feeding mechanism, and the cooling mechanism and the collecting mechanism are connected through a circulating mechanism. The invention relates to the technical field of saw blade machining. According to the milling device for metal saw blade machining, chippings in gaps of a milling cutter are brushed through the bristles on a connector, so that the chippings on the milling cutter are cleaned more cleanly, and the milling precision of the milling cutter is improved.

The invention discloses an anti-fatigue efficient milling parameter optimization control method for a titanium alloy thin-wall component. The method comprises the following steps that: establishing the primary election technological parameter domain of a titanium alloy thin-wall component; carrying out an orthogonal test; testing the surface integrity parameter of a test component; establishing acharacteristic relational expression of a titanium alloy thin-wall component milling technological parameter and surface integrity; according to the relational expression of the titanium alloy thin-wall component milling technological parameter and the surface integrity, a target function and a milling technological parameter constraint condition, establishing an optimization model for the anti-fatigue efficient milling parameter of the titanium alloy thin-wall component; and through an optimization tool in MATLAB, solving the optimization model for the anti-fatigue efficient milling parameterof the titanium alloy thin-wall component to obtain the anti-fatigue efficient milling parameter of the titanium alloy thin-wall component. By use of the method, the problems of poor surface integrity characteristic and low material removal rate in a milling process of the titanium alloy thin-wall component are solved.

The invention discloses a milling cutter which comprises a fixed end and a cutter body, the fixed end is arranged on the cutter body, a groove is arranged at the bottom of the cutter body, screw holes are arranged on the lateral side, bolts are arranged in the screw holes which are communicated with the groove, and a cutter bade is movably embedded in the groove. When the milling cutter is used for milling, the position of the cutter blade in the groove can be adjusted according to actual needs, the milling range is changed, the structure is simple, the operation is simple, and the processing efficiency and the milling accuracy can be well improved.

A rail vehicle includes a milling device for finishing the running surface of track rails during the travel of the rail vehicle along the track rails. The rail vehicle has a chassis frame having wheel sets. The milling device is provided with a milling head, and includes a framework arranged on the chassis frame having a milling head receptacle, which is displaceable vertically and transversely in relation thereto. The milling head receptacle can be supported for the vertical guiding via a guide shoe on the running surface and for transverse guiding in parallel to the milling head shaft via a guide stop laterally on the railhead. The milling head receptacle forms a transverse carriage, which supports the guide shoe and the guide stop, and the guide path of which, which is vertically displaceable, is provided on the side of the milling head receptacle facing toward the guide shoe.

The invention discloses a stepped shaft outer circle surface milling keyway apparatus, which comprises a base, wherein the base is provided with a moving seat capable of horizontally moving left and right, the moving seat is oppositely provided with a left ejection tip support seat and a right ejection tip support seat, the left ejection tip support seat is provided with a left ejection tip, the right ejection tip support seat is provided with a right ejection tip, the center axis of the left ejection tip coincides with the center axis of the right ejection tip, a stepped shaft is arranged between the left ejection tip and the right ejection tip, hydraulic moving claws are uniformly distributed on the right ejection tip support seat along the radial direction of the right ejection tip, thehydraulic moving claw at least has two out surfaces capable of simultaneously grasping the end portion of the stepped shaft, the base is provided with a cutter support seat, the cutter support seat is provided with a cutter installing seat, the cutter installing seat can vertically move up and down, and is vertically provided with a milling cutter, and the milling cutter rotatablely move down, and is matched with the moving seat to mill to form a keyway. According to the present invention, the positioning clamping mode of the stepped shaft outer circle surface milling keyway apparatus is simple, and the keyway milling precision is high.

The invention provides a milling machine head for machining heat-insulation bridge-cutoff aluminum doors and windows. The milling machine head can improve the operation efficiency. The milling machine head for machining the heat-insulation bridge-cutoff aluminum doors and windows comprises a supporting frame, two milling assemblies, two front-back moving assemblies and two up-down moving assemblies. The two milling assemblies are the same in structure and are symmetrically arranged on the left side and the right side of the supporting frame. The two front-back moving assemblies are the same in structure, are symmetrically arranged on the left side and the right side of the upper portion of the supporting frame and are used for driving the milling assemblies to move front and back. The two up-down moving assemblies are the same in structure, are arranged in a left-right symmetry manner and are used for driving the milling assemblies to move up and down.

The invention discloses a fixing device for workpiece edge-milling and a specially-shaped workpiece edge-milling process, and belongs to the technical field of edge-milling device processes. The fixing device comprises a fixing table and a pressing device, wherein a limiting block is fixedly arranged on the fixing table; the pressing device comprises a pressing block, a pressure transmission device and a pressure supply device; the pressure transmission device is horizontally fixed on the upper end surface of the fixing table; the pressing block is connected onto the output shaft of the pressure transmission device and is matched with the limiting block in the horizontal direction; the pressure supply device is connected with the pressure transmission device through a pipeline; and a supporting roller and a magnet are further arranged on the upper end surface of the fixing table. According to the fixing device disclosed by the invention, the pressing block, the limiting block and the magnet act with one another for fixing a workpiece onto the fixing table; the workpiece is transmitted to a rack or a next process through the supporting roller after edge-milling is completed, and anyposition on the material can be milled and processed. The fixing device is simple in structure, is convenient to operate, is high in processing efficiency, and is safe and reliable in processing process.

The invention provides a milling cutter capable of improving spiral milling machining precision, and a design method, and belongs to the field of machining. The milling cutter comprises a cutter handle and a machining part, wherein the machining part comprises a finish machining section, a chambering machining section and a rough machining section; a preliminary selection machining milling cutteris used for carrying out a spiral milling experiment, tested radial force is recorded and the average value of radial force is calculated; through finite element simulation software, a cutter deformation amount is obtained; according to the cutter deformation amount, a new milling cutter is designed; a newly designed milling cutter is used for carrying out the spiral milling experiment, whether anaperture obtained by the experiment meets an accuracy requirement or not is checked; if the requirement is not met, the milling cutter is designed again. According to the milling cutter and the design method, an aperture error caused by deformation since the cutter is affected by radial force in the spiral milling process is eliminated, finally, the measured aperture meets the accuracy requirement, the milling cutter can finish two-time milling of rough machining and finish the finish machining through one-time milling, and milling accuracy and machining efficiency are improved.

The invention relates to a machine tool processing device, in particular to a spindle milling head extending device which belongs to the technical field of machine tool processing. The machine tool processing device comprises a tank, wherein a spindle is arranged in the tank; the top part of the spindle is connected with an input shaft; the spindle is fixed to the bottom part of the tank through abearing gland and a spindle dustproof cover; a rotating deice is arranged at the top end of the input shaft; a planetary gear train is arranged in the input shaft; the rotating device is fixedly connected with the planetary gear train; the planetary gear train rotates to drive the input shaft to rotate; the input shaft drives the spindle to rotate through a spline connection manner; a lifting device is arranged at the connecting part of the spindle and the input shaft; and a broaching tool device is arranged in the spindle. The spindle milling head extending device provided by the invention has the beneficial effects that a workpiece is full-automatically processed, so that the workpiece processing accuracy is high, the processing requirement on different processing workpieces can be met,meanwhile, other parts of a machine tool have no need to be replaced, and only a broaching tool needs to be automatically loosened along with the function of an external force of a worm so as to be easily replaced.

The invention discloses a milling device for tiny curved impellers under the mesoscopic scale. The device comprises a first mounting board, a milling assembly and an anti-deforming assembly; the firstmounting board is arranged in a sliding mode; the milling assembly comprises a milling cutter and a rotary shaft; the rotary shaft is rotationally installed on the first mounting board; the rotary shaft and a drive device are in transmission connection; the milling cutter is installed at one end of the rotary shaft; the middle axis of the milling cutter and the center line of the rotary shaft arelocated on the same straight line; the anti-deforming assembly comprises a push rod and a top barrel; one end of the push rod is connected with the first mounting board; the top barrel is rotationally arranged at the other end of the push rod in a sleeving mode; the middle axis of the push rod and the middle axis of the milling cutter are parallel; and when the top barrel is used for forming tinythin-walled parts, the top barrel and the milling cutter abut against the tiny thin-walled parts from the two sides. The milling device can prevent the tiny thin-walled parts from deforming in the milling process.