363results about "Gear teeth manufacturing tools" patented technology

Method for setting up a gear grinding process, comprising the process steps: determining axis movements and / or a geometry of a grinding tool (17) for one grinding stroke or for several grinding strokes by means of a first quality control loop (Q1) by repeating the steps grinding (18), measuring (20) and correcting (28) for a pre-final target geometry (12) of a gear (4) which has a stock allowance (14) to a final target geometry (8) of the gear (4), wherein the steps grinding (18), measuring (20) and correcting (28) of the first quality control loop (Q1) are repeated on one or more components (19) until a gear ground on the respective component (19) or components (19) has achieved a predetermined accuracy with respect to the pre-final target geometry (12);Determining axis movements and / or a geometry of a grinding tool (17) for one grinding stroke or for several grinding strokes by means of a second quality control loop (Q2) by repeating the steps grinding (18), measuring (20) and correcting (28) for the final target geometry (12) of the gear (4), wherein the steps grinding (18), measuring (20) and correcting (28) of the second quality control loop (Q2) are repeated on one component (19) or on several components (19) until a gear ground on the respective component (19) or components (19) has achieved a predetermined accuracy with respect to the final target geometry (8).

The invention relates to the skiving of gear teeth. During the machining of tooth flanks of the gear teeth, pairs of oppositely oriented cutting edges of a skiving tool simultaneously come into contact with and / or out of contact with two oppositely oriented tooth flanks of the gear teeth. This reduces deflection effects and resulting machining inaccuracies. The two cutting edges of such a pair of cutting edges are defined by different generating geometries. In particular, the two cutting edges of a pair of cutting edges on the skiving tool do not run in the same plane or on the same spherical surface.

Disclosed is a skiving tool for machining teeth where machining marks are produced at unequal distances. Some cutting edges of a skiving tool at least partially extend at different heights along a tool axis. During machining, cutting edges arranged at different axial heights relative to the workpiece axis successively engage on a tooth flank. The engagement of the cutting edges occurs at different time intervals and at different distances in the width direction of the tooth flank. The effects of the engagement of the cutting edges on the machining process and the excitation of vibrations when the teeth produced are used therefore have a frequency spectrum of greater width and lower amplitude than if the cutting edges were to engage at equal time intervals and equal distances. The more irregular surface structure of the teeth have a positive effect on noise excitation behavior when teeth are engaging with other teeth.

The invention provides a tooth scraping machine tool based on a cylindrical cutter and a machining method.The tooth scraping machine tool comprises a machine tool body, a stand column is slidably installed at the top of the machine tool body through a radial feeding device, a sliding seat is slidably installed on the stand column through an axial feeding device, and a sliding plate is rotatably installed on the sliding seat through a moving angle adjusting mechanism; a main shaft is installed on the sliding plate in a sliding mode through a tangential feeding device, a cylindrical cutter used for gear scraping machining is installed at the output end of the main shaft, a workbench is arranged on the side edge of the stand column and located on the top of the lathe bed, and the workbench is used for clamping a gear to be machined. The machine tool adopts the cylindrical cutter as the cutter of the tooth scraping machine tool, so that the problems of instability and high cost of the traditional tooth scraping machine tool which adopts a conical cutter to process the tooth form are solved.

The utility model relates to the field of machining tools, and discloses a machining tool for an external spline with side teeth, which comprises an external spline hobbing cutter and an external spline side tooth milling cutter, a plurality of groups of hobbing cutter teeth are arranged on the external spline hobbing cutter along the axial direction, a root digging structure is arranged at the tooth top of each hobbing cutter tooth, and a chamfer is arranged at the tooth root of each hobbing cutter tooth; the external spline side tooth milling cutter comprises a milling cutter rod, a milling cutter blade is installed at the end of the milling cutter rod, an involute-shaped cutting edge is arranged on the milling cutter blade, and a plurality of involute cutting edge teeth are arranged on the cutting edge side by side. The external spline driving shaft capable of machining the spline with the side teeth solves the problem that in the prior art, a cutter capable of machining the external spline of the spline driving shaft in the design does not exist, and the machining requirement of the external spline with the side teeth cannot be met.

The utility model discloses an efficient and high-precision indexable gear hob blade, and relates to a gear machining tool. The problems that a blade has errors in modeling and is low in machining precision are solved. The L side of the indexable hard alloy tooth side blade is processed into an inner concave arc shape, and the R side of the indexable hard alloy tooth side blade is processed into an outer convex arc shape. According to the utility model, the three-dimensional modeling error of the hob is effectively controlled, the pressure angle error of a processed workpiece is improved to more than eight levels, the end face is easy to process, the grinding allowance is small, the cost is low, the processing precision of the hob is improved, the cost performance is very high, and the production cost is low. Not only can new blades be produced, but also the produced and manufactured blades can be transformed and upgraded, and the grinding cost caused by large deviation of gear machining tooth profiles and pressure angles is saved.

The invention provides a double-pressure-angle asymmetric tooth profile design and worm grinding wheel tooth grinding method. A tooth profile equation of the asymmetric gear is deduced, the meshing relation between a rack tool and the gear is analyzed in detail, and a precise profile geometric model of the dual-pressure-angle asymmetric gear is further established. In the aspect of worm grinding wheel gear grinding machining, the contour design and finishing method of a worm grinding wheel and application of the worm grinding wheel in asymmetric gear machining are studied, and a worm grinding wheel geometric model and a diamond roller geometric model needed by double-pressure-angle asymmetric gear worm grinding wheel gear grinding are established. The method provides a theoretical basis and an accurate model for design and processing of the asymmetric gear, and is of great significance for improving the efficiency and reliability of a gear transmission system.

The invention discloses a turning and rolling composite cutter for machining a through hole, and particularly relates to the technical field of turning and rolling composite cutters, the turning and rolling composite cutter comprises a turning and rolling composite cutter body and an elastic assembly; the turning and rolling combined tool body comprises a tool bar body, a tool bit body, a retainer, a rolling needle, a lock nut and a turning tool. The elastic assembly comprises an external thread block, an internal thread groove, a square sliding groove, a square sliding plate, a spring and an abutting block. The external thread block is fixedly arranged on the side, close to the tool bar body, of the tool bit body. An inner thread groove is formed in the side, close to the tool bit body, of the tool bar body. A square sliding groove is formed in the cutter bar body. The square sliding plate is slidably arranged in the square sliding groove. Two ends of the spring are fixedly connected with the inner wall of the square chute and the square sliding plate; the abutting blocks are fixedly arranged on the side, away from the spring, of the square sliding plate in an annular array. The tool bar is reasonable in structural design, the tool bar body and the tool bit body are designed separately, and the tool bar body and the tool bit body can be installed more stably through the acting force generated when the spring contracts.

The present invention proposes a diamond tool for dressing an internal meshing honing wheel, the diamond tool comprising an annular tool base and a diamond layer disposed on the front side of the tool base; the diamond layer is coaxially fixed to the tool base; and a trimming bevel tooth is provided on the outer periphery of the diamond layer so that the end face tooth edges of the trimming bevel tooth are used to dress the honing wheel. The diamond tool of the present invention is an external tooth helical gear structure. When meshing and dressing the honing wheel, material is removed from the honing wheel only by relying on the end face tooth edges of the trimming bevel tooth on the diamond layer. The trimming bevel tooth has a trimming tooth profile, which can achieve tooth profile modification of the honing wheel. At the same time, the movement of the honing machine tool drives the diamond tool to achieve tooth direction modification of the honing wheel tooth surface. Since the tooth surface of the trimming bevel tooth does not contact the tooth surface of the honing wheel, it is suitable for dressing honing wheels with different tooth direction modification requirements.

The invention discloses a segmented combined type worm grinding wheel based on spiral surface structuring and a laser finishing method, and belongs to the technical field of precise gear grinding. The working surface of the inner side of a spiral tooth groove of the worm grinding wheel at least comprises a section of structured area and a section of unstructured area in the axial direction; the structured area is provided with a crescent groove used for forming a grinding fluid storage and abrasive dust discharge channel in the grinding process. And the unstructured area keeps a continuous grinding surface and is used for finishing the surface of the machined workpiece in the structured area. According to the method, the laser processing head is controlled through multi-axis linkage to accurately describe an arc-shaped processing track in a spiral expansion coordinate system, the morphology consistency and the space precision of grooves are guaranteed, and the manufactured worm grinding wheel has good cooling, chip removal and accurate grinding performance and is suitable for high-efficiency and high-precision gear manufacturing.

This invention provides a broach for gear machining and its finishing device, relating to the field of gear manufacturing technology. The broach and finishing device include a bed, a drive unit, a CNC system, a clamping device, a coolant storage tank, a high-pressure air supply device, a dust extraction device, and two sets of cooling pumps. When the coolant cooling effect is insufficient, the invention increases the coolant flow rate through an electrically controlled flow valve to improve the cooling effect. If necessary, forced cooling can be achieved by simultaneously activating two sets of cooling pumps, significantly enhancing the cooling effect. The high-pressure air supply device provides high-pressure air to the compressed air nozzle, which is then sprayed onto the surface of the CBN grinding wheel through the jet chamber outlet to clean the surface, effectively reducing clogging and the frequency of grinding wheel dressing. Simultaneously, the dust extraction device, dust extraction pipe, and dust extraction hood remove dust from inside the grinding wheel hood, reducing floating dust and preventing dust from adhering to the grinding wheel surface and entering the grinding area.

The invention relates to a method for machining pre-toothed workpieces by means of a continuous generating grinding process using a grinding worm wheel (100). The grinding worm wheel is dressed, and workpieces are machined using the dressed grinding worm. For each grinding stroke, the worm thread flanks have a contact zone (104, 104') in which the grinding worm wheel comes into machining engagement with the workpiece. Each contact zone has a quality-determining region, and the quality-determining regions of at least some of the contact zones are positioned so as to not overlap with the quality-determining regions of all other contact zones. A plurality of grinding strokes are carried out using each of the contact zones before the grinding worm wheel is dressed again. The invention also relates to a correspondingly designed gear-cutting machine.

The application discloses a straight profile ring surface worm turning machining machine tool and a machining method, wherein the machine tool comprises a machine tool body, a driving assembly, a tool assembly and a control assembly; the driving assembly is arranged on the machine tool body; the tool assembly is arranged on the machine tool body and located on the side surface of the machine tool body, the tool assembly comprises a cutter head engaged with a worm blank, a plurality of turning groups are arranged on the cutter head, and the turning groups are fixed on the outer circumferential surface of the cutter head in the circumferential direction of the cutter head at equal intervals; and the control assembly is arranged on the machine tool body and electrically connected with the driving assembly and the tool assembly respectively. The machining method comprises connection and turning. The straight profile ring surface worm turning machining machine tool and the machining method are characterized in that a plurality of turning groups are arranged, the cutter head and the plurality of cutting tools form a worm gear type cutter similar to a worm gear, the cutter head is equivalent to a worm gear body, the cutting tools are equivalent to worm gear teeth, the worm gear type cutter is engaged with the worm blank to cut out worm teeth, and the machined worm is closer to a worm theoretical value.

The invention relates to a tool head for producing or machining teeth, in particular internal teeth, of a workpiece in the kinematics of hobbing peeling, said teeth being rotated about the tooth axis of rotation (C1) thereof by means of a peeling tool (S) which is held in the tool head and is rotated about the tool axis of rotation thereof, wherein the tooth axis of rotation (C1) and the tool axis of rotation (S1) form an axis angle of intersection (X), which is not zero, with a tool holder (7b), which defines an orientation of the tool axis of rotation (S1) relative to the tool head, and a shaft (6), the shaft is mounted in the tool head for rotation about its drive shaft axis of rotation (B1) and is rotationally driven for machining teeth, and wherein an orientation () of the tool axis of rotation (S1) is present, which orientation is at least 15 DEG and no more than 85 DEG, for a deviation of the orientation of the drive shaft axis of rotation (B1) from the axis position, the axis position is oriented at an axis intersection angle [sigma] with the tooth rotation axis (C1) and the orientation is angled with respect to a plane orthogonal to the drive shaft rotation axis (B1).

The invention relates to the technical field of gear grinding machining, in particular to a grinding machine tool suitable for gear rotating face grinding, which comprises a rack and a digital display control panel, the rack is respectively provided with a lower clamp table and an upper clamp table from bottom to top, and the lower clamp table and the upper clamp table are used for clamping a gear main body; grinding wheel main bodies are arranged on the two sides of the lower clamp table and the upper clamp table; a vertical beam is arranged on one side of each grinding wheel body, an elastic pulling and pressing assembly used for conducting elastic pulling and pressing on the vertical beams is arranged on the rack, and the rack, the lower clamp table, the upper clamp table, the grinding wheel bodies, the rigid pushing and pressing assembly, the grinding wheel dressing assembly, the lifting driving assembly, the vertical beams, the elastic pulling and pressing assembly and the like cooperate and cooperate with one another. Double-station synchronous grinding can be achieved, the grinding efficiency is improved, hard contact damage can be avoided, stable rigid pushing force can be provided, the grinding feeding amount can be accurately controlled, and safety and machining precision are both considered by combining the two modes of flexible contact and rigid pushing.

The invention relates to a method for producing and machining toothed workpieces (1), the toothing being a blind toothing having a toothing region (A) which forms a flank depression region (B) in which the base of a flank depression extends in a recessed manner with respect to the tooth flank into a fine-machining region (C), such that, in a fine-machining step, an end portion of a honing tool moves only in this depression region (B). The flank depressions are formed by means of an undercutting tool so that flanks (9) of the flank depressions are produced which extend in parallel with one another.

The invention discloses a composite worm grinding wheel and a dressing method thereof.The composite worm grinding wheel is composed of a surface micro-structured grinding wheel body and a fine grinding wheel body which are axially connected into a whole, the surface micro-structured grinding wheel body adopts ultrasonic vibration to assist a single-point diamond pen in dressing, and a large number of separated-continuous oblique curve micro grooves are dressed in the tooth side face; cutting force, heat production and the temperature of a contact area are reduced by reducing the contact layer, the effective blade grinding number of the grinding wheel during grinding is increased, and the problems of blockage of the grinding wheel and thermal damage to the surface of a workpiece are effectively solved; a fine grinding working face is formed on the outer side tooth face of the fine grinding wheel, and the problem that the surface roughness is large is solved by using grinding materials with the large particle size number. The device integrates the functions of rough grinding and accurate grinding, machining is completed through one-time clamping, repeated clamping and positioning errors are reduced, materials are efficiently removed, chip removal and heat dissipation are improved, the machining precision and size consistency are improved, and the contradiction that efficiency, heat dissipation and surface quality are difficult to consider in the generating grinding process is solved.

To provide a determination method of a gear working condition and a determination program of a gear working condition which can reduce vibration, in finishing of a gear.SOLUTION: A determination method of a gear working condition includes: a first step of measuring the shape of workpiece having a gear shape, and thereby acquiring a pitch error of the workpiece; a second step of performing frequency analysis of the pitch error, and thereby acquiring a rotation order component of a cumulative pitch error; a third step of multiplying the rotation order component of the pitch error by the number of rotation when the workpiece is worked, and thereby acquiring a frequency component of working load fluctuation by the pitch error; and a fourth step of setting the number of rotation when the workpiece is worked, so that a peak frequency of the working load fluctuation and resonance frequency of a gear working device are shifted from one another.SELECTED DRAWING: Figure 3

To provide a gear machining tool having abrasive grains and preventing waste of the abrasive grains.SOLUTION: The gear machining tool 1 is a gear machining tool for polishing a tooth surface formed on a workpiece, and includes an annular base material blade part 12 having a plurality of blades 14 on an outer peripheral surface at one end of a shaft-like base material body part 11. And a plurality of abrasive grains provided on the rake face 14a so as to overlap a ridge line portion 15 which is a boundary between the flank face and the rake face 14a when viewed from the direction of the rotation axis C of the substrate 10, in which the abrasive grains are not provided in a region other than the ridge line portion 15 on the flank face. 14a.SELECTED DRAWING: Figure 5

The invention relates to a machining of a toothing (10) by skiving, in which machining traces (52) having unequal distances are produced. For this purpose, the scraping tool (60; 74) and at least some of the cutting edges (40; 40.1, 40.2, 40.3) extends at least partially at different heights along a tool axis (18) of the scraping tool. During machining, cutting edges arranged at different axial heights with respect to the workpiece axis (16) sequentially act on the tooth flanks (32). As a result, the cutting edges engage at different time intervals and at different pitches in the tooth flank width direction (54). Thus, the reaction of the cutting edge engagement on the machining process and the vibrational excitation during the use of the produced teeth have a wider frequency spectrum and a lower amplitude compared to the case of temporally and spatially equidistant cutting edge engagement. In particular, the more irregular surface structure of the manufactured toothing can produce an advantageous effect on noise excitation performance when the toothing is engaged with a corresponding toothing.

The invention relates to the technical field of grinding wheel detection, in particular to an involute tooth profile on-machine detection method for a dish-shaped grinding wheel, which comprises the following steps: controlling different positions of the grinding wheel to be in contact with a laser interferometer through a machine tool to measure the radius of the grinding wheel; measuring tooth thicknesses of the center position and different radius positions of the grinding wheel; and comparing the measured tooth thickness of the grinding wheel with the theoretical tooth thickness, and evaluating whether the tooth profile precision of the grinding wheel meets the machining requirement or not. According to the method, different positions of the grinding wheel are controlled to be in contact with the laser interferometer through the machine tool, measurement of the radius of the grinding wheel, the center position of the grinding wheel and the tooth thickness of different radius positions of the grinding wheel is achieved, comparison with the theoretical tooth thickness is achieved, and therefore whether the tooth profile precision of the grinding wheel meets the requirement or not is evaluated. Consistency of dressing, detecting and machining of the grinding wheel is guaranteed. The measurement method is simple to operate and does not need complex data operation processing, so that the problem that an existing detection method is large in error is solved.

The utility model discloses a grinding wheel for a gear, which comprises a grinding wheel base body, two grinding bosses are arranged on the grinding wheel base body in the axial direction, the two grinding bosses are respectively arranged at the two ends of the grinding wheel base body in the axial direction in a protruding mode, grinding portions are arranged on the grinding bosses, and the grinding portions are arranged on the grinding wheel base body. And the grinding part is used for grinding an external workpiece. According to the grinding wheel for the gear, the grinding bosses are arranged at the two axial ends of the grinding wheel base body in the protruding mode respectively, the grinding portions used for grinding the gear are arranged on the grinding bosses, the contact area between the grinding wheel and a gear workpiece can be reduced during grinding, and therefore the stress generated when the gear workpiece is ground by the grinding wheel is increased, and the gear workpiece can be prevented from being damaged. And the grinding efficiency is improved.

Makes it easier to attach the two hobs. [Solution] The tandem hob comprises a first hob including a plurality of first cutters positioned at intervals on a first helix centered on a first central axis, a second hob including a plurality of second cutters positioned at intervals on a second helix centered on a second central axis, and a collar connecting the first hob and the second hob such that the first central axis and the second central axis lie on a common axis. When the first hob and the second hob are connected by the collar, the first cutter includes a first cutting edge having its tip on the first side in the circumferential direction around the common axis. The second cutter includes a second cutting edge having its tip on the second side opposite to the first side in the circumferential direction around the common axis. The first hob and the second hob are restricted from relative rotation around the common axis and from approaching each other along the common axis.

The utility model discloses a blade-replaceable finger type gear milling cutter, particularly relates to the technical field of metal processing, and comprises a gear milling cutter main body for processing a gear, the gear milling cutter body comprises a cutter column body, a first chip containing groove, a second chip containing groove, a third chip containing groove and a fourth chip containing groove are formed in the outer portion of the cutter column body, and the first chip containing groove, the second chip containing groove, the third chip containing groove and the fourth chip containing groove are distributed in an annular array mode. The first chip containing groove, the second chip containing groove and the third chip containing groove are arranged. According to the utility model, the peripheral tooth blades or the top tooth blades on the gear milling cutter main body are disassembled and assembled through the fastening screws, so that a worker can adjust the layout of the peripheral tooth blades and the top tooth blades according to processing requirements, and the degree of freedom of arrangement of the peripheral tooth blades and the top tooth cutter shaft is improved; meanwhile, the cutting output and the cutting force of the peripheral tooth blade and the top tooth blade can be adjusted, so that the practicability and the operability of the cutter are improved.

To provide a device and a method for polishing a gear, which can reduce material cost and polishing cost of a polishing gear and solving the problem of a resource environment.SOLUTION: A polishing device 1 for rotary-driving a polishing gear to polish the tooth surface of a polished gear in a state where the polishing gear 8 and the polished gear 9 are engaged with each other is configured such that a coating layer 10 in which a film thickness α of an acrylic resin material is about 20 μm is formed on the tooth surface 8a of the polishing gear, a polishing liquid containing silicon carbide abrasives smaller in average grain diameter than the film thickness of the coating layer of the polishing gear is supplied to the engaging place of the polishing gear and the polished gear, and the polishing gear is rotary-driven to polish the tooth surface 9a of the polished gear.SELECTED DRAWING: Figure 2

According to the circular tooth cutter, the maintenance process is simplified through the detachable cutter grains on the side face of the circular tooth cutting edge, and when a certain cutter grain is abraded or damaged, a user can replace the cutter grain on site by himself or herself through the detachable cutter grains. The whole cutter does not need to be sent back to a manufacturer for maintenance or directly discarded like a traditional circular tooth cutter, time and transportation cost are saved, maintenance cost is reduced, meanwhile, the smoothness and precision of a cutting surface can be ensured by using the fresh and sharp cutter grains, vibration and noise in the machining process are reduced, and therefore the final quality of a product is improved; an operator can quickly replace the circular tooth cutter without using any tool through the quick release device on the upper surface of the quick release fixing disc, so that the time required for replacing the cutter is greatly shortened, and the production efficiency and the productivity are improved; and meanwhile, an operator can quickly switch the circular tooth cutters of different specifications according to machining materials and operation requirements through the quick-release fixing disc, and the multifunctionality and adaptability of the equipment are enhanced.

The invention discloses a grinding wheel structure for gear machining, a gear grinding machine and a gear polishing and grinding method.The grinding wheel is divided into a grinding area and a polishing area in the axis direction, and the polishing area and the grinding area are coaxially arranged; a polishing molded line at an inlet of the polishing area is set according to elastic deformation generated by a polishing material due to engagement of a gear into the polishing area during polishing, and the elastic deformation generated by engagement of the gear into the material in the polishing area is compensated; after grinding machining of the gear is completed, the gear is directly polished through the polishing area; the finishing curve is determined according to the contact amount during gear grinding in the polishing stage, the molded line of the polishing area is corrected, the influence of elastic deformation of materials in the polishing area on the gear machining precision is eliminated, and meanwhile the surface roughness of the gear is improved.

The invention relates to a method for forming a chamfer (21) at an edge (20) defined by an end face (22) of a gear wheel (3) and a tooth surface (6, 7) adjoining the tooth portion of the gear wheel (3) using a cutting tool (1) having at least one cutting edge (11). Furthermore, the invention relates to a cutting tool for carrying out the method and to a blade, a device and a control program for carrying out the method. It is crucial that the cutting edge (11) machines only one machining section of the edge (20) per rotation of the cutting tool (1).