31results about How to "Efficient Machining" patented technology

The invention belongs to the technical field of optical device manufacturing and relates to a method for improving shape accuracy and processing efficiency of an off-axis aspheric mirror, comprising the following steps: (1) designing a rotary aspheric surface as well as a primary and secondary consubstantial structure for the primary body according to the size and the dimension of the off-axis aspheric mirror to be processed, i.e. a secondary body, and determining the amount of the off-axis aspheric secondary bodies to be processed at one time; (2) disposing through holes on a primary body blank piece; (3) placing all secondary body blank pieces into the through holes and fixing on a lathe after integrating into a cylindrical integrated work piece, and processing a spherical surface closest to the rotary aspheric surface on the integrated work piece; (4) generating a processing path of cutting tools based on the shape of the rotary aspheric surface, reprocessing the spherical surface by utilizing an ultra-precision lathe and carrying out form error analysis and compensating processing according to the measured integrated rotary aspheric surface shape. The provided method is simpleand easy to realize, has the advantages of high-efficiency, easy detachability and high shape accuracy and can realize high-efficient processing on an off-axis aspheric surface with high shape accuracy.

The invention discloses a design method of a hypoid gear pair, aiming at solving the problem of difficulty in designing the hypoid gear pair by using the prior art. The design method of the hypoid gear pair comprises the following steps: 1, taking a plane as a hypoid gear pair transmission forming principle for a big gear tooth surface; 2, determining the geometric technical parameters of a big gear tooth surface shape; 3, determining the geometric technical parameters of a small gear tooth surface shape; and 4, since the gear parameters refers to right-handed rotation of a big gear and left-handed rotation of a small gear, when the big gear is in right-handed rotation and the small gear is in left-handed rotation, dereferencing opposite numbers for the parameters related to the y axle in the parameters. The determination of the geometric technology parameters of the big gear tooth surface shape comprises the following steps: definition of representing the geometric parameters of the big gear tooth surface shape, determination of the coordinates of an M point, determination of the component expression formula of a vector shown in the specification, solution of a tooth-shaped unit vector shown in the specification, solution of another tooth-shaped unit vector shown in the specification, solution of the normal vector shown in the specification one side tooth surface sigma2, determination of the equation of the one side tooth surface sigma2, determination of the equation of the other side tooth surface sigma1, determination of the equation of a tooth surface sigma1theta and formation of the gear teeth of the gear in array.

The invention relates to a piezoelectric type ultrasonic rotary main shaft device, which is provided with a main shaft, a shaft housing, an amplitude transformer, a transducer and a current-collecting device and is characterized in that the main shaft is internal and external composite axes; the external shaft is a hollow shaft and is provided with a supporting bearing; the supporting bearing is compressed and fixed by a front bearing flange and a back bearing flange between the external shaft and the shaft housing; a positioning spacer and a sleeve are arranged between each bearing; the amplitude transformer is provided with a flange part which is connected with the end socket of the external shaft by a flange and a bolt; only the flange at the wave node of the amplitude transformer is connected with the external shaft; the middle part of the external shaft is provided with a drive gear which transfers rotary power. High-frequency vibration signals generated by a supersonic generator provided by the exterior are transferred to the transducer by the current-collecting device of rotary motion; the axial supersonic vibration generated by the piezoelectric chip of the transducer is amplified by the amplitude transformer, and then acts on a tool head. The main shaft device has simple and compact structure, is easy to assemble and maintain, has high ultrasonic energy transmission efficiency, and can process parts with larger size.

A surface coated tool including a substrate, and stacked layers composed of two coating layers represented by the following general formula (1) on the substrate is provided. A first coating layer to be coated on the surface of the substrate, which has a thickness of 0.1 to 1 [mu]m, is composed of a granular crystal having a mean crystal diameter of 0.01 to 0.1[mu]m. A second coating layer to be coated on the surface of the first coating layer, which has a thickness of 0.5 to 5 [mu]m, is composed of columnar crystal grown in a direction perpendicular to the substrate, and the columnar crystal has a mean crystal width of 0.05 to 0.3[mu]m in a direction parallel to the substrate while a mean crystal width thereof is larger than the mean crystal diameter of the first coating layer. [Formula 3] M 1 - a Al a (C b N 1-b ) (1) wherein, M represents at least one metal element selected from the group consisting of the elements of Groups 4, 5 and 6 of the periodic table, Si and rare earth elements, ''a'' satisfies the relation of 0.25 a 0.75, and ''b'' satisfies the relation of 0 b 1.

The invention discloses a method and a machine tool for machining a hypoid gear pair and aims to solve the problem that the hypoid gear pair is difficultly machined in the prior art. The machining method comprises the following steps of: 1, machining a big gear surface, namely 1) machining the right gear surface of a big gear; and 2) machining the left gear surface of the big gear; and 2, machining a small gear surface, namely 1) machining the left gear surface of a small gear; and 2) machining the right gear surface of the small gear. The machining machine tool comprises a workpiece shaft, a power head, a tilting working table, a rotary working table, an XYZ working table and a body, wherein the workpiece shaft replaces an original power spindle head of the conventional machine tool; the rotary working table is fixedly arranged on the XYZ working table and makes rotating axes of the rotary working table and the workpiece shaft coplanar; the tilting working table is fixedly arranged on the rotary working table; an inclined angle chi is formed between the upper surface of the tilting working table and the bottom surface of the tilting working table; and the power head is fixedly arranged on the tilting working table through a bolt, a guide rail and a guide rail groove.

In the tip section of an end mill body which is rotated about the axis thereof, a plurality of end cutting edges are formed in such a way as to extend from the inside of the front end of the tip section to the outside of the rear end thereof. In the outer periphery section of the end mill body, there are formed a plurality of peripheral cutting edges which extend to the rear end in such a way as to string out along the outer ends of the end cutting edges. Some of the plurality of end cutting edges are long end cutting edges extending from near that portion of the axis of the end mill body which is in the tip section. The angle which is formed, in an arbitrary cross section intersecting the axis at right angles, by the straight line that connects the axis to a peripheral cutting edge stringing out along a long end cutting edge and by the straight line that connects the axis to a peripheral cutting edge stringing out along the nearest end cutting edge positioned forward of the long end cutting edge in the rotation direction of the end mill, is larger than the angle which is formed, in a view looking at the tip section in the direction of the axis, by the tangent line at the inner end of the aforementioned long end cutting edge and the tangent line at the inner end of the nearest end cutting edge positioned forward of the long end cutting edge in the rotation direction of the end mill.

A deep-hole push-boring cutter device with two cutter bodies combined comprises the front cutter body, the rear cutter body, a mounting positioning face and a mounting thread, wherein the front cutter body, the rear cutter body, the mounting positioning face and the mounting thread are sequentially connected and are integrally formed. The outer circumference of the front cutter body and the outer circumference of the rear cutter body are each connected with a guiding block and a cutting blade. The cutting blades are manually edged. A drill rod stretches into a machined part, and after the push-boring cutter device with the two cutter bodies combined is assembled on the drill rod, push-boring cutting can be conducted. During push-boring cutting, the cutting blade at the front end and the cutting blade at the rear end are used for cutting the part at the same time. The deep-hole push-boring cutter device with the two cutter bodies combined has the characteristics of being simple in structure, convenient to use and practical.