467 results about "Gear shaping" patented technology

The invention relates to an ion sensitive sensor comprising a silicon oxide layer and a silicon substrate which are vertically stacked, a source electrode and a drain electrode arranged on the silicon oxide layer at an interval, and a graphene layer arranged on the surface of the silicon oxide layer and between the source electrode and the drain electrode; wherein the graphene layer is respectively connected with a gear shaping part of the source electrode and a gear shaping part of the drain electrode, and the surface layer of the graphene layer is penetrated with metal oxide particles; the ion sensitive sensor also comprises a micro fluidic channel layer which is erected on the gear shaping part of the source electrode and the gear shaping part of the drain electrode, and the gear shaping part of the source electrode and the gear shaping part of the drain electrode are coated with insulating layers; the micro fluidic channel layer is matched with the graphene layer to form a cavity for accommodating an object for measurement, and is opened with through holes; and suspended grid electrodes are inserted into the through holes and extend into the cavity. The ion sensitive sensor has a structure which is similar to a field effect transistor, and has advantages of high flux, high sensitivity, short response time and the like.

The invention discloses a manufacturing method of an integral herringbone gear shaft, which comprises the following steps that: material preparation: a center hole is drilled on one end of a work piece; primary machining; primary detection; heat treatment; secondary machining; secondary detection; rough milling; chamfering at the gear end; coating anti-carburizing layers on both ends of the herringbone gear shaft so that the depth of a carburized layer is 3.55 to 3.95mm, and quenching so as to enable the hardness of a gear part to reach HRC58 to 62, and to enable the hardness of the heart to reach HRC28 to 33; carrying out shoot peening on a gear surface; tertiary machining; gear shaping; external grinding; fine milling; and inspection. The manufacturing method of the integral herringbone gear shaft has the advantages of improving the bending strength of the gear root, reducing the manufacturing cost and improving the manufacturing precision.

The invention discloses a thin-wall annular gear processing method which comprises the steps of forging, rough turning, tempering, half finished turning, finish turning and gear shaping, wherein the finish turning process comprises the steps of: taking the end surface of the thin-wall annular gear after half finished turning as a thrust surface, acting the axial force to fix the thin-wall annulargear on a horizontal lathe work bench, and then turning the inner wall and the outer wall of the thin-wall annular gear; and the gear shaping process comprises the steps of: using a fixture to simlutaneously fix the end surface and the outer wall of the thin-wall annular gear after finish turning, and then conducting gear shaping to the inner wall of the thin-wall annular gear. The thin-wall annular gear processing method can lead the thin-wall annular gear after processing to have small deformation, has high precision and high efficiency.

The invention discloses a method for manufacturing a bevel gear of an axle gear box for diesel locomotives, which comprises the steps of blank forging, blank heat-treatment, gear-blank processing, gear-shape processing, gear-end processing, gear-surface heat-treatment, precise reference modification and gear-shape finish-machining, wherein the step of blank heat-treatment comprises the sub-steps of normalizing and thermal refining; the step of gear-blank processing comprises the sub-steps of rough turning and finish turning; the step of gear-shape processing comprises the sub-steps of gear milling, gear hobbing or gear shaping; the step of gear-surface heat-treatment comprises the sub-steps of nitriding, surface quenching and tempering; the step of precise reference modification comprises the sub-steps of end face modification and centre hole modification; and the step of gear-shape finish-machining comprises the sub-steps of gear grinding and polishing. By using the method disclosed by the invention, the production efficiency of the bevel gear can be improved, and the consumption amount and production cost of raw materials can be reduced; and meanwhile, the method is simple in process, and the manufactured bevel gear is long in service life.

The invention discloses a numerical control gear shaping error compensation and gear profile modification method. The profile error compensation, the pitch error compensation, the tooth pitch accumulative error compensation and the integer accumulative error compensation numerical control processing codes or the profile modification processing code are generated automatically through software, a gear shaper cutter and a workpiece are controlled via a numerical control system so as not to rotate at a speed strictly, and according to the requirement of the compensation procedure, the instantaneous transmission ratio of the gear shaper cutter to the workpiece is adjusted in real time, and the machining precision of the workpiece can be improved by one to two grades on the premise that the precision of the gear shaper cutter and the transmission accuracy of the machine tool are not improved. Especially, when the structural accuracy of the machine tool is naturally lowered after years of use, the accuracy life of the machine tool can be prolonged by using the provided method.

The invention relates to a method for machining an inner gear ring, and belongs to the technical field of machining. The method for machining the inner gear ring solves the problems that in the prior art, the production process of an inner gear ring machining technology is long, the rigidity of an inner gear ring after normalization cannot satisfy the requirement, and the condition of nitriding is high in temperature. The inner gear ring comprises a body 1, a locating hole 2, a mounting hole 3 and a lubricating hole 4. The method for machining the inner gear ring comprises the following steps of forging forming, rough machining, tempering, fine machining, two-step gear shaping, nitriding and turning machining. Machining processes of the inner ring are simple, the inner gear ring which is manufactured is high in rigidity, the rigidity can reach 650-759 HV, an effective rigid layer is deep, the depth can reach 0.40mm, precision is high and anti-abrasion performance is good.

A bevel gear is generated using an annular milling cutter having a blade material made of a high-speed tool steel mounted to a main body, the blade material being coated with at least one layer of a film of a composition substantially comprising (Ti(1-x)Alx)(NyC(1-y)) (where, 0.2<=x<=0.85, 0.2<=y<=1.0), and dry cutting is performed at a cutting speed in the range from 20 to 400m/min without using a cutting oil. With this method, teeth can be generated at a greatly improved cutting speed without using any expensive tool such as cemented carbide, thereby realizing efficient production of a bevel gear at a reduced cost.

The invention discloses a friction nanometer power generator with a gear shaping structure. The power generator mainly comprises two friction components which are connected through an elastic component, wherein at least one component is of the gear shaping structure which is formed by arranging a plurality of friction units; the gear shaping structure can form a tight occluding state with a friction unit on the other component; under the action of the elastic components, the relative position between the two components can be periodically changed by external force, so that a friction power generation process is promoted, and an electrical signal can be output outwards by the power generator. Effective extraction of vibration energy by sliding friction is realized for the first time through cooperation between the two friction units and the elastic components; meanwhile, through the occluding between first friction units and second friction units matched with the first friction units which are distributed in a gear shaping state, the area of sliding friction is increased, and the electricity output performance of the power generator is improved.

The invention discloses a method for processing a harmonic reducer flexible wheel. The method sequentially includes processes of blanking, forging and shaping, normalizing for heat treating, spinning, turning in a CNC (computer numerical control) lathe, gear-shaping in a CNC milling machine and punching and shaping. The process of punching and shaping is performed through matching of a punching machine and a punching and shaping die, an upper die base, an upper padding plate, an upper fixing plate, a lower die base, a lower padding plate, a lower fixing plate, an upper shaping die, a positioning column, a pressing plate, a tightening ring, a tightening-ring pressing plate and a locking screw are arranged on the punching and shaping die, and an inner shaping gear hole is formed in a core portion of the upper shaping die. The pressing plate clamps and fixes a fixed portion of the semi-finished flexible wheel, the positioning column, the tightening ring, the tightening-ring pressing plate and the locking screw cooperatively fix a center hole of the semi-finished flexible wheel, and the inner shaping gear hole performs shaping upon a profile of an outer gear portion. Therefore, flexible-wheel processing can be completed through a universal machine tool, financial burden of manufacturers can be reduced on one hand, and on the other hand, processing precision of the flexible wheel can be guaranteed.

The invention relates to a numerical control gear shaping, gear milling compound machine tool, comprising a tool body, a numerical control rotating table, a compound functional stand column and sliding plates provided with tool rests. The tool surface of the tool body is provided with a horizontal moving guide rail; the bottom of the stand column is coupled to a rotating/feeding sliding plate which is located on the guide rail of the tool surface, ensuring horizontal movement and functionally transformed rotary movement; the vertical surface of the stand column is symmetrically provided with sliding plates which are provided with functional tool rests; the numerical control rotating table is provided with a replaceable pawl clamp which fixes workpieces to be processed and drives the workpieces to be processed to rotate on the table surface. The machine tool is suitable for the gear processing requirements and special processing requirements in the industries of mine, metallurgy, ship, energy, and the like, integrates multiple processing functions on one machine tool, is suitable for both trial production of users and batch production, reduces the device investment and occupation area for users and increases the usage range of the device.

This invention discloses a mini die device used for precision forming mini double gears, which comprises die backer, top column, spring, slide block, cavity die 6, terrace die 16, drift guiding-sheathing, drift pin 11, spacing ring, electrical heating coil, ejector rod, up inlaid 8, up drift pin 13 and pin 7, wherein the cavity die 6 has gear shape cavity, the 8 is inserted on the upside of the 6 and has a same axial center with 6, at least two pins are set inside 6 and 8 horizontally to fix the position; 13 inserts to the center hole of 8, and its upside connects the lower surface of 11, on the lower surface of 8 has cavity 15 which has a same axial center with 6. The device can finish the gear shaping and double-gears assemblage at the same time.

The invention discloses a numerical control machining method for a harmonic reducer flexible gear bi-directional crowned tooth profile, and relates to a harmonic reducer. The method comprises the steps that a rough machined flexible gear workblank is machined into a flexible gear semi-finished product on a precision lathe; a liquid plastic thin wall sleeve fixture is sleeved with the obtained flexible gear semi-finished product, positioning and clamping are carried out on the flexible gear semi-finished product, a nut and a gasket are used for fixing the cup bottom of the flexible gear, and then a tooth crest crowned surface in the tooth direction is lathed on a precision numerical control lathe; a precision aligning instrument is used for enabling a numerical control precision gear shaping with a gear cutter or a gear hobbing machine tool with a gear cutter to be precisely aligned to the lathed workpiece, and an elliptical core shaft fixture is used for positioning the flexible gear; a tooth thickness crowned surface in the tooth direction of the flexible gear is machined through multi-axis linkage control on the numerical control gear shaping or the gear hobbing machine, when the machining is performed, the long shaft direction of the elliptical core shaft fixture is fixed, and the midpoint of the cutter axis is ensured to be aligned to a long shaft of an elliptical core shaft; meanwhile, the flexible gear rotates around the elliptical core shaft, and the flexible gear tooth profile is machined through the generating motion of the gear cutter and the flexible gear.

The invention discloses a skew line tooth surface gear transmission pair and a tooth width geometric design method. The skew line tooth surface gear transmission pair adopts an alternating axis transmission form composed of involute spur gears and skew line tooth surface gears. Each skew line tooth surface gear is formed by spreading straight tooth involute slotting cutters in a staggered mode; the skew line tooth surface gears can only mesh with the straight tooth cylindrical gears and can not mesh with the skewed tooth cylindrical gears with helix angle; and the tooth trace is approximate to a skew line and forms an oblique angle with the radius direction, thereby being very suitable for the demands of design diversification for aviation compact space. The method illuminates the gear shaping principle of the skew line gear and skew line tooth surface gear, and deduces the tooth surface equation of the skew line tooth surface gear. The margin line of the involute slotting cutters is utilized to calculate the position of the tangent point of the internal end tooth root. The condition that the outer end tooth top tooth thickness is equal to zero is utilized to obtain the sharpening condition. The condition of avoiding secondary cutting of the tooth root is combined with determine the cutter top fillet radius, thereby finally obtaining the tooth width of the skew line tooth surface gear.

This invention discloses an involute gear shaping technique which includes the following processes: establish theoretic involute for the gear by CAD software; confirm the drum shaped size and maximum tooth profile; shape any one of the conjugate gears; shape the tooth profile of three-dimensional model of the above conjugate gears; convert the three-dimensional model to numeric control code and input to machine tool for machining. This invention simplifies traditional taper gear shaping technique. It reduces vibration & yawps in joggling and prevents edge effect.

The invention discloses a multi-linkage gear shaping quick positioning tool. The multi-linkage gear shaping quick positioning tool comprises a sliding seat, a positioning rod which is arranged on the sliding seat and a positioning fixture which is used for fixing a multi-linkage gear on a slotting machine working platform. One end of the positioning rod is provided with an opening which corresponds to the gear in shape, and the other end of the positioning rod is provided with a protrusion which can be inserted into a toothed groove. During use, when a first part is machined, the workpiece is firstly fixed, one end, with the opening, of the positioning rod is clamped on gear teeth, machined to be in a tooth shape, of the gear, the other end, with the protrusion, of the positioning rod is inserted into a tooth groove of a slotting cutter, after the slotting cutter and the gear which is machined to be in the tooth shape are meshed so as to automatically reach a precise angle through positioning of the positioning rod, the slotting cutter is then fixed, the one-to-one corresponding relation between the slotting cutter and machined teeth on the part is established, and when follow-up parts are machined, the positioning rod simply needs to be used for positioning during part fixing. The multi-linkage gear quick positioning tool has the advantages of being high in positioning precision, convenient to operate, suitable for large batch production and the like.

The invention relates to a machining technology of forms of gear teeth, namely a technology for improving tooth profile machining precision of internal teeth of a carburized and quenched gear. The technology comprises pre-machining, heat treatment and finish machining. According to the technology, a gear shaping cutter is polished properly during pre-machining, common normal line allowance for finish of the internal tooth profile is reserved, further finish machining is carried out on the gear after heat treatment, and therefore the machining precision of the gear is effectively improved, and overall mechanical property of the gear is improved.

The embodiment of the invention provides a metal shell, a fabrication method thereof and a mobile terminal. The metal shell comprises a back cover and an intermediate frame, wherein the back cover andthe intermediate frame are connected to form an inner cavity of the metal shell, at least one antenna slot is formed in a corresponding part on the back cover and/or the intermediate frame, glue grabbing structures are respectively arranged at parts, at two sides of the antenna slot, of an inner side surface of the intermediate frame, gear shaping grooves are formed in the glue grabbing structures, the antenna slot is filled with plastic, and the glue grabbing structures are coated with the plastic. In the metal shell disclosed by the embodiment of the invention, the glue grabbing capabilityof the glue grabbing structures are improved by the gear shaping grooves, the bonding capability of the metal shell and the plastic is effectively improved, so that the mobile terminal can be prevented from being abandoned due to separation of metal and the plastic during falling or maintenance and disassembly, and the brand quality and competiveness can be improved; and moreover, the gear shapinggrooves can be formed in protruding parts by a mode of gear shaping, the metal shell is not needed to be partitioned into multiple segments for drilling and injection molding after processing, the processing technology is simplified, and the processing cost is reduced.

The invention discloses an inner-cone spline broaching machine tool, which comprises a base, a broaching tool, a sliding plate, a cutter relieving cylinder assembly, a working device and a driving device. The base is arranged on a machine tool body and is provided with a guiding seat thereon; one end of the broaching tool extends into the machine tool body, and the broaching tool is connected with a stretching cylinder in the machine tool body and can be vertically and slidably arranged on the guiding seat; the sliding plate is sleeved on the guiding seat and is slidably arranged on the base;the cutter relieving cylinder assembly is arranged on the base, and an extending end of the cutter relieving cylinder assembly is connected with the sliding plate; the working device is arranged on the sliding plate and is used for fixing inner-cone splines; and the driving device is arranged on the sliding plate and is used for driving the working device to rotate one indexing unit each time. According to the inner-cone spline broaching machine tool disclosed by the invention, the inner-cone splines are machined by a broaching tool in a broaching manner, the precision by adopting the broaching tool is higher than the precision by adopting gear planning, and the efficiency by adopting the broaching tool is higher the efficiency by adopting the gear shaping and the gear planning; the working device carries out operations, such as automatic indexing, automatic broaching tool feeding, retracting and the like, by the driving device, thus the indexing operation is uniform and reliable, andthe degree of automation is high; and the inner-cone spline broaching machine tool disclosed by the invention is convenient to be detached, and can carry out multiple specifications of inner-cone spline operations by replacing the working device.

The invention discloses a vertical column overturn type numerical control fan-shaped gear shaper, the structure thereof mainly comprises: a lower bed body, a work bench, a middle bed body, a vertical column, a main drive mechanism, a tool carrier mechanism; a vertical column overturning mechanism is arranged between the middle bed body and the vertical column, the vertical column overturning mechanism is that: the front part of the vertical column is hinged with a rotary hinged shaft which is positioned on the middle bed body, the back part of the vertical column is hinged with an ascending and descending mechanism which is positioned on the middle bed body; and the tool carrier mechanism is hinged at the front part of the vertical column. The vertical column overturn type numerical control fan-shaped gear shaper has the advantages that: the cutting angle of a tool can be adjusted by the vertical column overturning mechanism, the gear shaper can process a fan-shaped gear with constant speed ratio or variable speed ratio which is provided with the cutting angle with the range of 0 degree to 10 degrees, the vertical column overturning mechanism is simple, the precision is high, the efficiency is high and the adjustment is convenient, thus being the easiest mode for adjusting the cutting angle. The tool carrier mechanism has good rigidness and can realize the high-speed cutting. A tool avoiding mechanism can ensure the accuracy, synchronization, no loss and no lag of the tool avoiding, and the noise is very low, which is just more than 70db.

The invention discloses a computing formula for a numerical control gear sector gear slotting machine to process an eccentric gear sector of a rock arm shaft, and a method for processing the same. The computing formula comprises a computing formula of the hobbing radial radius rho of the eccentric gear sector of the rock arm shaft, a computing formula of the corresponding arc length of the revolution angle of the eccentric gear sector of the rock arm shaft and a computing formula for processing the contour curve of a reference circle of the eccentric gear sector of the rock arm shaft. The processing method comprises the following steps: 1) starting a program; 2) computing the initial position of the eccentric gear sector of the rock arm shaft; 3) starting auxiliary actions; 4) starting to cut the position; 5) inputting the cutting parameter into a numerical control register; 6) computing the displacement at three coordinate axes by a numerical control system; 7) cutting the contour line of the eccentric gear sector through the linkage of the three coordinate axes; 8) extending the Z axis to a retracting position; 9) extending the Y axis and the X axis to the retracting position; 10) stopping a cooling fluid and stopping a slotting cutter; and 11) ending the program. The computing formula and the method have the advantages that a parameterized programming can finish the computation and processing of the contour curve of the whole workpiece, and the parameter can be input into the numerical system in a short time to achieve the requirement of processing an eccentric distance gear sector.

The invention relates to a deceleration and speed change integrated face gear pair and a processing method thereof. The deceleration and speed change integrated face gear pair comprises a drive gear and a driven gear, wherein the drive gear is a small cylindrical gear; the driven gear is a non-cylindrical face gear; gear teeth of the face gear are uniformly distributed on the edge of the end surface of the face gear; the pitch surface of the face gear is a plane and is perpendicular to a rotation axis of the face gear, and a pitch curve of the face gear is a non-circular curve on the pitch surface of the face gear; a cylindrical surface on which a divided circle on the small cylindrical gear is positioned is a pitch cylindrical surface, the rotation axis of the small cylindrical gear with straight teeth is orthogonal to that of the face gear and the small cylindrical gear is meshed with the face gear; the pitch cylindrical surface of the small cylindrical gear is tangential to the pitch surface of the face gear, and the pitch cylindrical surface of the small cylindrical gear is in contact with a pitch curve point of the face gear and keeps pure rolling. The face gear can be processed by a gear slotting tool through gear shaping, and the process of enveloping the gear teeth of the face gear through the gear slotting tool is similar to the transmission process of the face gear pair. The deceleration and speed change integrated face gear pair has the advantages that the transmission mechanism is simplified, the transmission efficiency is improved, and the transmission space is saved.

The invention discloses a design method of a high-order modified eccentric circular gear and a non-circular gear pair conjugated with the high-order modified circular gear. There is no literature report on design and application research on a high-order modified eccentric circle-non-circular gear pair so far. The design method specifically comprises the following steps that firstly, a pitch curve equation of a high-order modified eccentric circle gear and a non-circular gear pair conjugated with the high-order modified eccentric circle gear is established, and a center distance is calculated through the numerical method; secondly, the concavity and convexity of a pitch curve are verified, the maximum modulus under the situation that undercutting is not carried out when a gear is machined through the gear shaping method is obtained, the pressure angle change range is calculated, the maximum pressure angle value is verified, and the contact ratio when the high-order modified eccentric circle gear and the non-circular gear pair conjugated with the high-order modified eccentric circle gear are meshed is calculated. According to the design method, a whole set of thorough design theoretical basis is provided for the high-order modified eccentric circle gear and the non-circular gear pair conjugated with the high-order modified eccentric circle gear in actual application, and the using and popularizing of the high-order modified eccentric circle gear and the non-circular gear pair conjugated with the high-order modified eccentric circle gear are promoted.