369 results about "Gear cutting" patented technology

The invention relates to a six-axis five-linkage spiral bevel gear cutting machine. A lathe bed is provided with a fixed upright post and an X-direction linear guiderail with an X-axis slipway which is driven by a driving mechanism to move along the guiderail; the X-axis slipway is provided with a rotary table and a rotary table driving mechanism; the rotary table is provided with a workpiece box with a workpiece main shaft which is driven by the driving mechanism to rotate; one lateral surface of the upright post is provided with a Y-direction linear guiderail perpendicular to the X-direction linear guiderail; the Y-direction linear guiderail is provided with a Y-axis slipway which is driven by the driving mechanism to move along the guiderail; the Y-axis slipway is provided with a Z-direction linear guiderail perpendicular to the Y-direction linear guiderail; the Z-direction linear guiderail is provided with a tool box which is driven by the driving mechanism to move along the guiderail; and the tool box is provided with a rotatable tool spindle. The six-axis five-linkage spiral bevel gear cutting machine has the advantages of simple and stable structure, good reliability, good rigidity, few parts, small occupied area, easy protection and chip removal, and convenient assembly and disassembly of workpieces and tools.

The invention discloses a spiral bevel gear cutting machine tool and a gear cutting method. The gear cutting machine tool comprises a cutting tool system, a workpiece system, a machine tool body and a numerical control system, wherein the cutting tool system comprises an XZ working table, an X-axis lead screw, a Z-axis lead screw, a short shaft, a tool base revolving drum, a tool base, No.1 milling cutters, a milling cutter shaft, No.2 milling cutters, a gear shaft and a correcting wedge. The rotating centre line of the tool base revolving drum and the rotating centre line of the short shaft are collinear; the right end surface of the tool base revolving drum is fixedly connected with an annular flange plate at the left end of the tool base by the correcting wedge; the right end of the tool base is provided with the milling cutter shaft; the rotating centre line of the milling cutter shaft and the rotating centre line of the short shaft are intersectant; and both ends of the milling cutter shaft are provided with the No.1 milling cutters, the No.2 milling cutters or grinding wheels. The left end surface of the tool base is provided with a drive motor; the drive motor is meshed with a bevel gear on the milling cutter shaft by the gear shaft; and the rotating centre line of the output shaft of the drive motor and the rotating centre line of the milling cutter shaft are vertically intersectant. The invention also provides a method for processing helical bevel gears by utilizing the machine tool.

The invention relates to a four-axis and four-linkage numerical control generating machine of arc bevel gear and belongs to the field of the gear generating machine technology. The invention comprises a machine body, a workpiece box and a cutting tool box. The machine body is fixedly provided with a straight guide rail of Z-axis and a straight guide rail of X-axis. The straight guide rail of X-axis drives a saddle to do the straight line motion via a servo motor. The saddle is provided with a workpiece box and rotates around a rotary shaft to do the rotary motion of B-axis for adjusting the required cone angle of gear root. The workpiece box is provided with a workpiece spindle which is driven by the servo motor to do the rotary motion of A-axis. The straight guide rail of Z-axis drives a vertical column to do the straight motion of Z-axis via the servo motor. The vertical column is fixedly provided with a straight guide rail of Y-axis which drives the cutting tool box to do the straight and reciprocating motion in the vertical direction of Y-axis via the servo motor. The main motor on the cutting tool box drives the cutting tool disk which is provided with the cutting tool to rotate for doing the rotary motion of C-axis of gear cutting. The four-axis and four-linkage numerical control generating machine of arc bevel gear has the advantages of simple structure, humanized layout, convenient loading and unloading of the workpiece, good dynamic rigidity and dynamic balancing, and small occupied area.

The invention provides a high-speed tool steel gear cutting tool in which fracture or chipping does not occur at the cutting edge, and which realizes excellent cutting performance over long periods. Moreover, a method of manufacturing a gear cutting tool including: a step for quenching a tool material comprising high-speed tool steel and which has been rough processed to a shape corresponding to a final shape of a gear cutting tool, to transform a structure of the tool material into martensite, a step for temperling the tool material after quenching to transform any residual austenite dispersingly distributed throughout a matrix of the martensite structure formed by the quenching, into martensite, and a step for finishing the tool material after tempering to a final shape, is characterized in that the tool material after quenching is subjected to sub-zero treatment involving cooling and holding at a temperature of less than -150° C.

The invention discloses a chipless forming method for a gear stick and a section gear through hot extrusion by utilizing an alloy steel horizontal type backward extruder, solving the problems that the existing gear cutting process has more working procedures, low efficiency, large metal loss, more operators for machine tool processing and high production cost and the like by utilizing the chip processes of lathing, milling, drilling, inserting and grinding. The method comprises the following steps: an inner cooling combined type double-conical surface gear squeezing die, a recipient and a floating pecker combined mandril are adopted by taking the producing principle of alloy steel thick wall special seamless steel tubes as an example; scale-free heating is rapidly carried out on the blank; lubricating warm-extrusion molding is carried out; center punching, shaft hole slotting and tooth surface extrusion are finished at a time; and the finished product of the gear stick is directly produced, then is subject to waste heat annealing, slicing by wire-electrode cutting and heating process to be manufactured into a finished product. Compared with a chip gear-cutting molding method, the invention has simplified working procedure, few labor, high efficiency, less metal loss, high gear strengthen and reduces the production cost, and then tooth surface precision reaches the standard. The method of the invention is a significant technological innovation of straight tooth and oblique tooth cylindrical gear process technologies.

The present invention relates to a method for hard-fine machining of tooth flanks with corrections and/or modifications on a gear-cutting machine, wherein respective toothed wheel pairings which mesh with one another within a transmission or a test device are machined while taking account of the respective mating flanks, and wherein the tooth flanks of the relevant workpieces are provided with periodic waviness corrections or waviness modifications. In accordance with the invention, the rotational error extent is determined by means of rotational distance error measurement of the toothed wheel pairs in a gear measuring device and/or transmission. This measurement result serves as an input value for defining the amplitude, frequency and phase position for the periodic flank waviness corrections on the tooth flanks of the toothed wheel pairings for production in the gear-cutting machine.

A surface-coated cutting tool which has excellent chipping resistance and wearing resistance in high-speed cutting processing such as high-speed gear cutting processing, high-speed milling processing,and high-speed drilling processing. The surface-coated cutting tool comprises a tool base, e.g., a cemented carbide base, cermet base, or high-speed tool steel base, and at least a hard coating layerformed on a surface of the tool base and having a multilayer structure composed of a thin layer (A) and a thin layer (B) alternating therewith. The thin layer (A) is constituted of an (Al,Cr,Si)N layer satisfying the empirical formula ¢AlXCrYSiZ!N (wherein 0.2 <= X <= 0.45, 0.4 <= Y <= 0.75, 0.01 <=Z <= 0.2, and X+Y+Z=1 in terms of atomic ratio), and the thin layer (B) is constituted of an (Al,Ti,Si)N layer satisfying the empirical formula ¢AlUTiVSiW!N (wherein 0.05 <= U <= 0.75, 0.15 <= V <= 0.94, 0.01 <= W <= 0.1, and U+V+W=1 in terms of atomic ratio).

The invention provides a three-coordinate measuring method for bevel gear tooth form error; the procedures of the method are that: (1) the stop position of measuring bevel gear tooth form error is defined by calculation; (2) positions of other measuring points on the checking part are defined; (3)the actual tooth face is measured by taking the stop position and the theoretical coordinates of measuring points as object points; (4) the tooth form error is worked out. By applying the method of the invention in the tooth form error measurement, the repeatability error can be controlled below 0.004mm, thereby markedly improving the measuring accuracy and being capable of measuring the involute gear below six-grade accuracy. The trend of the involute form of the measuring result is relatively obvious, based on which the depth of the tooth root and the tooth head can be analyzed. According to the measuring result, the gear-cutting machine is guided to be adjusted, achieving good effects.

The invention discloses a method for machining cylindrical gear cutting teeth. The rotation speeds of a workpiece and a cutter are n1 and n2 respectively, the ratio of the n1 to the n2 is equal to the ratio of the tooth number of the cutter and the workpiece, and the cutter is equivalent to a gear engaged with the workpiece. During machining, the axes of two main shafts of the workpiece and the cuter form a crossed axis angle alpha, and the angle alpha is the algebraic sum of a tooth directional spiral angle beta of the workpiece and a tooth directional spiral angle gamma of the cutter. The blade shape of the cutter is designed to be conjugate with the tooth shape of the workpiece; the rotations of the workpiece and the cutter are controlled by a multi-axis movement controller; and the cutter has axial feed and radial feed. At a cutting point, the cutting speed V is changed along with the change of the cutting point on the blade to form a cutting action so as to finish cutting and shaping of a gear tooth surface of the workpiece. The machining for a non-penetrating involute inner tooth can be finished without a tool withdrawal groove and cannot be finished by the existing gear machining technology. An inserting tooth and a pull tooth can be replaced, the machining precision and efficiency can be improved, and the manufacturing cost can be greatly reduced.

In a gear cutting simulation method and device, a gear-cutting-machine model which specifies relative positions between a blank model and a cutter model is created. A gear model is created as a result of simulation of gear cutting which is performed with the blank model and the cutter model arranged in the gear-cutting-machine model.

Metalworking fluids contain active sulfur, a certain kind of inactive sulfur called “available sulfur”, and fat in a base oil of a lubricating viscosity. The metalworking fluids are chlorine free and phosphorous free. Boundary lubrication is provided by the fat, while extreme pressure lubrication is provided by the sulfur. Available sulfur is inactive sulfur minus any contribution of inactive sulfur from sulfurized saturated fats. Active sulfur and available sulfur are present in balanced proportions, while fat is present at an amount effective to provide boundary lubrication. Use of the fluids reduces tool wear over a long period of action and over a variety of boundary and extreme pressure conditions.

A bending state known as “coning,” in which the amount of bending of the flexspline gradually decreases in accordance with the distance from the open end of the spline, occurs in cup-type or “silk hat”-type wave gear devices. A tooth profile in which the tooth depth is kept constant and in which the bottom lands and top lands are parallel to each other along the tooth trace direction is used as the basic tooth profile for the circular spline and the flexspline of the wave gear device. A taper surface is formed on a part of the top land near the open end of the flexspline in the basic tooth profile, whereby a modified tooth profile is obtained. The modified tooth profile is employed as the tooth profile for both of the splines. Both of the splines can be caused to mesh together without generating coning-induced interference. Both of the splines can also be subjected to gear cutting by a simple process using a typical machining mechanism.

The invention relates to a gear cutting machine for the grinding of external profiles and/or internal profiles of workpieces having at least one machining head which can be rotated about an axis and which has a grinding tool, and having a dressing unit. In accordance with the invention, the dressing unit is supported in the region of the pivot axis of the machining head such that it is pivotable about the common pivot axis together with the machining head and such that it can be moved along the pivot axis toward the grinding tool to be dressed.

A gear cutting machine wherein a chamfer/deburr device and tool are fastened to a fixed component of the gear cutting machine. In this way, it is possible to adjust the chamfering/deburring tool into the working position in a simple and dependable manner to remove the edges from a gear. The device preferably has a linear track as well as a pivot axis, which can position the tool into the optimum position for the chamfering and/or deburring of the gear.

The invention relates to a device for green machining bevel gears, including a CNC machining station for gear cutting a wheel blank (K2). The machining station includes a tool spindle which is used to receive a gear cutting tool and a work piece spindle which is used to receive the gear blank (K2). The machining station also relates to a machining station which operates in a vertical manner. The device also comprises a vertical processing station having a tool holder and a work piece spindle which is used to receive a work piece blank (K1). The machining station mechanically forms a functional unit together with the pre-machining station, wherein the work piece blank (K1) undergoes green machining in the pre-machining station, and is transferred as a gear blank (K2) to the first machining station after the first green machining where it is cut into a gear. The machining station and the pre-machining station are linked together in terms of data and control.

The invention discloses a numerical control bevel roll tester, the structure of the invention comprises: a lathe bed respectively provided with a drive guide rail and a driven guide rail which are perpendicular to each other, an upright post arranged on the driven guide rail of the lathe bed, a driving headstock arranged on the drive guide rail of the lathe bed, automatic travel mechanisms which are respectively arranged between the bottom of the upright post and the lathe bed and between the bottom of the driving headstock and the lathe bed, and a driven headstock which is arranged in the upright post and provided with an automatic travel mechanism which can move in vertical direction. The driving headstock and the driven headstock are respectively provided with a drive main shaft and a driven main shaft which are perpendicular to each other and positioned horizontally, a gear pair to be tested is respectively arranged in the inner holes of the drive main shaft and the driven main shaft; the drive main shaft is connected with a drive mechanism which drives the drive main shaft to rotate. The invention has the advantages that: the automatic aligning teeth, the autoloading and torque display, the automatic measurement and the automatic test according to the preset programs in the rolling test process of the bevel gear pair are solved, and precise parameters are provided for the cutting machine modifying gear cutting parameters.

The invention relates to a large-module screw taper gear processing lathe. Wherein, said lathe has X straight track and relative X sliding table; the crane has Z straight track 15 and relative beam; said beam has Y straight track and relative blade box; the blade box has rotational blade main axle mounted with blade; the X sliding table is mounted with work piece table mounted with screw taper gear; said table can be disc one or axle one. The invention has simple structure, high stability and high reliability.

The invention relates to an automatic loading gear alignment method and a device for an articulated robot-based gear cutting machine. The method comprises the following steps: clamping a gear to be cut by a loader to move towards a cutter, leading the gear to be cut to be approximately parallel to the axis of the cutter after entering a gear alignment area, wherein the gear to be cut can rotate along the axis of the gear in the loader, the loader can swing back and forth relative to the cutter so as to close to the cutter until the gear to be cut enters a cutting position; and the device comprise an articulated robot and clamp claws arranged thereon, each clamp claw comprises a clamp claw base and two-finger translation manipulators, the two-finger translation manipulators comprise a cylinder and a pair of claw fingers, and the two claw fingers are provided with arc-shaped clamping surfaces. The method can fast lead the gear to be cut to be aligned and sent at the position to be cut, and the whole alignment process is automatically conducted by the loader, so that the operation is simple, the alignment is accurate and the production efficiency is high; and the device can lead the gear to be cut to close to the cutter by a fold line movement track, and complete the alignment operation of the gear during closing.

A bevel gear cutting machine, which is designed for, among other things, chamfering and/or deburring edges on the teeth of a bevel gear. The gear cutting machine has a workpiece spindle which receives the bevel gear coaxially. A carriage is provided, which receives a plate-shaped cutter head having multiple bar blades. The gear cutting machine has multiple numerically controllable axes, which are activatable via a programmable controller, one of the axes forming a workpiece spindle axis of the workpiece spindle. Another axis is used as the tool spindle axis of the plate-shaped cutter head. The numerically controllable axes are implemented and positioned so that by adjusting at least one of the axes, the workpiece spindle, together with the bevel gear, may be inclined in relation to the cutter head in such a way that the bar blades, while the workpiece spindle rotates around the workpiece spindle axis and the cutter head rotates around the tool spindle axis simultaneously, plunge one after another into tooth intermediate spaces of neighboring teeth and execute a chamfering or deburring motion in relation to the edge.

The invention provides a method for achieving eutectic soldering of chips. The method comprises the steps of a, compressible areas in the chips are determined, and a photoetching mask panel is manufactured; b, conducting adhesives in the compressible areas of the chips are removed through a photoetching develop method on a gilded ceramic wafer; c, ball points, used as protruding points, are planted at the position, where the adhesives are removed, on the ceramic wafer through a gold ball bonding method; d, the ceramic wafer is cut into small ceramic wafers consistent with the chips in size through a gear cutting method; e, a tool locating clamp is manufactured according to the shapes of cavities to be welded, and a small ceramic wafer pressing block clamp with gold protruding points makes contact with non-circuit areas of the chips through the protruding points; f, a pressing block is arranged on the small ceramic wafer pressing block clamp, and vacuum compressible soldering of the chips is indirectly achieved. The gilded ceramic wafer is used as the base material, the mature photoetching technology and the ball-bonding ball planting technology are used for manufacturing the protruding points to provide effective mechanical support for soldering, and the method is wide in application range.

Bevel gear cutting machine for chamfering and/or deburring edges on the teeth of a bevel gear. The gear-cutting machine comprises a workpiece spindle, which receives the bevel gear coaxially of a spindle axis. Furthermore, a deburring spindle is provided for the receiving of a deburring tool and several numerically controllable axes are given. A deburring blade head with several blade cutter-like blade inserts serves as deburring tool, whereby the blade inserts are insertable in recesses of the deburring blade head essentially radially oriented to a deburring spindle axis (E) and comprise edges for chamfering and/or deburring.

The invention relates to a three-axis numerical control hobbling machine for realizing diagonal rolling cut by replacing a flee cutter saddle with a tangential cutter saddle, which solves the problems that in the prior art, the Y axis and the C axis of the three-axis numerical control hobbling machine cannot realize linkage and consequently normal teeth separation cannot be guaranteed. The three-axis numerical control hobbling machine comprises a machine tool body, an upright post mechanism, a rolling cutter saddle mechanism and a workbench mechanism, wherein the lifting upright post mechanism comprises a Z axis; a roller arranged in the rolling cutter saddle rotates around the roller; the workbench moves along an X axis which is vertical to the Z axis and the Y axis respectively and rotates around the C axis which is parallel to the Z axis; the roller is driven to rotate by a main motor; the Z axis is driven by a Z-axis servo motor; the rolling cutter saddle is driven by a Y-axis servo motor; the workbench is driven by a X-axis servo motor; the speed at which the rolling cutter saddle axially moves along the Z axis is equal to that at which the rolling cutter moves along the Y axis axially so as to form linkage; the output end of the upright post mechanism is provided with a first gear pair; the output end of the main motor is provided with a second gear pair; the output of the upright post mechanism is combined with that of the main motor to be connected to the workbench mechanism to drive the workbench to rotate along the C axis; the rotating speed of the Z axis is equal to that of the Y axis; and the Z axis is linked with the C axis of the workbench, so that the Y axis is connected with the C axis to form the linkage. Thus, the rotation of the C axis can get comprehension during rolling cut to avoid generating gear cutting.

Milling of a bevel gear tooth system in the continuous process, wherein a cutter head comprising a plurality of pairs of inner cutting edges and outer cutting edges is applied to a workpiece, the inner cutting edges are arranged on a smaller fly circle radius than the outer cutting edges and movements for a metal-cutting machining by milling are performed by a gear cutting machine where the bevel work gear and the cutter head run linkedly: performing a first continuous metal-cutting machining by milling using the gear cutting machine according to a first machine setting, wherein convex inner flanks on the bevel work gear are machined by the inner cutting edges; and performing a second continuous metal-cutting machining by milling using a gear cutting machine according to a second machine setting, wherein concave outer flanks on the bevel work gear are machined by the outer cutting edges.