22results about "Worm wheels" patented technology

The invention discloses a worm and gear grinding tooth surface forming method and a transmission error evaluation method considering tooth direction crowned shape modification, and the method comprises the steps: firstly obtaining a grinding wheel, a gear and grinding machining parameters, and building a surface model of a gear workpiece and the grinding wheel; comprising grinding wheel axial profile modeling, grinding wheel spiral curved surface modeling, gear end surface profile modeling and gear tooth surface modeling; the maximum tooth direction drum shape modification amount is obtained, and a shape modification curve is calculated according to the shape modification requirement; loading the modification curve into a grinding wheel fixed coordinate system; the grinding wheel rotating coordinate system is converted into a gear rotating coordinate system through coordinate transformation; information of the grinding wheel rotating coordinate system is transmitted to the gear, generation operation is conducted on the surface of the gear, and the tooth surface morphology of the gear is obtained; and finally carrying out distortion calculation on the tooth surface of the gear. According to the method, the influence of tooth direction crowned shape modification can be considered when the continuous generating grinding tooth surface generation model is constructed, so that accurate calculation and control of tooth surface morphology are realized.

The invention relates to the technical field of worm gear tooth groove machining, in particular to a high-precision numerical control special lathe for worm gear tooth groove machining, which comprises a lathe body, a sliding cover is arranged on one side of the lathe body, and a control panel is arranged on the other side of the lathe body; the device comprises a machine tool body, a workpiece clamping mechanism arranged on one side of the interior of the machine tool body, a tooth groove machining mechanism arranged on the other side of the interior of the machine tool body, a pre-cutting micro-disturbance assembly arranged at the front end of one side of the tooth groove machining mechanism, and a couple damping assembly arranged at the front end of the other side of the tooth groove machining mechanism. The couple damping assembly is arranged on one side of the tooth groove machining mechanism. Compared with the prior art, by arranging the force coupling damping assembly, while the workpiece posture and the chip flow stability are kept, the initial meshing success rate is increased, the service life of the cutting edge is prolonged, the steady-state cutting time is shortened, and the tooth profile precision and the machining consistency are overall improved.

The present invention relates to an apparatus and a method for machining a worm shaft of a double enveloping worm gear composed of a double enveloping worm shaft and a worm wheel, and enables X-axis movement of the worm shaft, Y-axis and Z-axis movements of a worm machining cutter, A-axis rotation of the worm shaft, C-axis rotation of the cutter, and B-axis tilting of a saddle on which the cutter is provided, and thus can facilitate worm shaft machining.

The invention provides a special alignment tool and method for worm gear hobbing machine machining, the special alignment tool comprises a pressing plate, the pressing plate is used for being installed in a T-shaped groove of a gear hobbing machine table top, and a pressing plate threaded hole is machined in the pressing plate; a top plate is further included, a positioning boss used for being matched with the T-shaped groove is machined on the bottom end face of the top plate, a lug plate is arranged on one side of the top plate, an adjusting threaded hole is machined in the position where the lug plate is located, an adjusting bolt is installed in the position where the adjusting threaded hole is located in a threaded fit mode, and a penetrating through hole is machined in the top plate. The pressing plate and the top plate are fixedly connected through locking bolts penetrating through the through holes and the threaded holes of the pressing plate. A special tool is utilized, a traditional alignment method is improved, the reference of the worm gear is accurately aligned to be coaxial with the axis of the workbench by 0.005 mm, the manual alignment efficiency is improved, and the machining precision is controlled.

The present invention relates to an apparatus and a method for machining a worm shaft of a double enveloping worm gear composed of a double enveloping worm shaft and a worm wheel, and enables X-axis movement of the worm shaft, Y-axis and Z-axis movements of a worm machining cutter, A-axis rotation of the worm shaft, C-axis rotation of the cutter, and B-axis tilting of a saddle on which the cutter is provided, and thus can facilitate worm shaft machining.

1. A method for hard micromachining of gear teeth on a workpiece using geometrically undefined cutting edges by generating grinding, wherein a grinding worm, in particular a multi-start grinding worm with bonded abrasive grains made of CBN or diamond, is brought into machining engagement with the gear teeth at a machining position and is re-profiled after machining one or more workpieces of a workpiece batch, thereby undergoing material removal and thus reducing the central pitch diameter of the grinding worm before being used for further machining, and during re-profiling a profiling means is positioned by a rotation axis relative to the orientation of the worm thread, and material removal is carried out in particular at a profiling position different from the machining position, accompanied by removal of metal material binding the abrasive grains.

The application discloses a worm and gear grinding device, and relates to the technical field of worm and gear grinding devices, which comprises a chassis, a rack assembly, a lifting assembly, a positioning assembly and a grinding force control assembly. The rack assembly is installed on the chassis, the lifting assembly and the positioning assembly are both installed on the rack assembly, the lifting assembly is used for driving the worm to lift relative to the worm gear, the positioning assembly is used for positioning the worm gear, the worm gear is engaged with the worm, the worm can rotate, the grinding force control assembly is installed on the positioning assembly, and the grinding force control assembly is used for controlling the size of the grinding force between the worm gear and the worm. The application can control and stabilize the grinding force, and realizes efficient and precise grinding of the worm and gear.

This invention discloses a simple auxiliary tool for testing worm gears on a conventional lathe. It includes a movable seat, a fixed seat, and a fixed shaft. The fixed seat is fixedly mounted on the tool holder of the conventional lathe. One end of the movable seat is movably mounted on the fixed seat and can be secured by a tension bolt. The other end of the movable seat is fixedly mounted on the fixed shaft, and the worm gear is sleeved on the fixed shaft via a bearing. The movable seat is engraved with a scale indicating the rotation angle, and the fixed seat has an indicator mark at the corresponding scale position. The worm gear is mounted on the lathe's main axis, ensuring free rotation. The worm gear is mounted on the simple auxiliary tool, allowing free rotation. The simple auxiliary tool allows for fine-tuning of the angle and height to ensure the correct installation position of the worm gear and worm and the visibility of the fine-tuning angle. This invention has a simple structure, good manufacturability, and convenient operation, and has certain practical value.

The invention discloses a worm and gear grinding tooth surface forming method and a transmission error evaluation method considering multi-head grinding wheel base pitch errors, and the method comprises the steps: firstly obtaining parameters such as a gear, a grinding wheel, machining and multi-head grinding wheel base pitch errors, defining the base pitch errors, building a grinding wheel surface model considering the errors, and building a standard involute gear model; then the grinding wheel rotating coordinate system is sequentially converted into a gear rotating coordinate system through coordinate transformation, tooth surface generation operation is conducted, and the tooth surface morphology is obtained; and finally, carrying out fast Fourier transform analysis on the tooth surface ripples, extracting tooth surface features and evaluating the ghost frequency noise risk. According to the method, the influence of the base pitch error of the multi-head grinding wheel can be accurately considered in the tooth surface generation process, tooth surface morphology prediction and howling risk analysis are achieved, and high universality and engineering application value are achieved.

The invention relates to a method for a hard-fine machining of teeth on workpieces using geometrically undefined cutters by means of a continuous generating grinding process in which a grinding worm, in particular a multi-thread grinding worm, with bonded abrasive grains made of CBN or diamond in particular is brought into machining engagement with a toothing at a machining location and is reprofiled after machining one or more workpieces of a workpiece batch, thereby undergoing material abrasion and thus reducing the average pitch diameter of the grinding worm, before being used for additional machining. During the reprofiling, a profiling means is positioned relative to the worm thread orientation using a rotational axis, wherein the material abrasion occurs at a profiling location, which differs from the machining location in particular, under the effect of the abrasion of a metal material which bonds the abrasive grains.

The worm gear tooth machining device comprises a fixing frame, a supporting frame, a machining box and a protective shell, the supporting frame is fixedly arranged at the top of the fixing frame, the machining box is fixedly connected to one side of the supporting frame, the protective shell is fixedly arranged on one side of the machining box, a machining part is arranged in the machining box, and the supporting frame is fixedly connected to one side of the machining box. An oil injection swing part is arranged in the protective shell and composed of an oil injection part and a swing part. A rotating rod in the machining part drives a worm cutter to rotate and is meshed with a to-be-machined worm gear to drive the worm cutter and the machining base to rotate, precise cutting of worm gear teeth is achieved, meanwhile, a spray head of an oil spraying swing part does reciprocating arc swing motion, lubricating oil can be evenly sprayed to a machining area, friction and heat in the cutting process are reduced, and the machining efficiency is improved. And machining errors caused by overheating or excessive friction of the worm gear teeth are avoided, so that the machining precision is improved, and the stable cutting environment is also beneficial to improving the machining efficiency.

The present invention relates to an apparatus and a method for machining a worm shaft of a double enveloping worm gear composed of a double enveloping worm shaft and a worm wheel, and enables X-axis movement of the worm shaft, Y-axis and Z-axis movements of a worm machining cutter, A-axis rotation of the worm shaft, C-axis rotation of the cutter, and B-axis tilting of a saddle on which the cutter is provided, and thus can facilitate worm shaft machining.

The application relates to the technical field of worm gear tooth groove machining, in particular to a high-precision numerical control special lathe for worm gear tooth groove machining, which comprises a machine tool body, a sliding cover arranged on one side of the machine tool body and a control panel arranged on the other side of the machine tool body; a workpiece clamping mechanism arranged on the inner side of the machine tool body, a tooth groove machining mechanism arranged on the other inner side of the machine tool body, a pre-cutting micro-disturbance assembly arranged on the front end of one side of the tooth groove machining mechanism and a couple of force vibration damping assemblies arranged on one side of the tooth groove machining mechanism. Compared with the prior art, the couple of force vibration damping assemblies are arranged, the initial engagement success rate and the tool blade life are improved, the steady-state cutting time is shortened, the tooth shape precision and the machining consistency are improved while the workpiece posture and the chip flow are kept stable.

The invention relates to the technical field of gear hobbing machines, one embodiment of the invention provides a numerical control turbine gear hobbing machine which comprises a liquid baffle, a liquid collecting box, a liquid spraying assembly, a chip pouring assembly and a backflow assembly, the liquid baffle is detachably installed on a machining table of a gear hobbing machine body, and the liquid collecting box is arranged below the machining table of the gear hobbing machine body through a containing assembly; the liquid collecting box is arranged in the gear hobbing machine body, a filter plate is slidably installed in the liquid collecting box in a penetrating mode, the liquid spraying assembly is arranged at the top end of the gear hobbing machine body, the chip pouring assembly is arranged on the side face of the gear hobbing machine body and used for pouring filtered chips, and the backflow assembly is arranged on the side face of the gear hobbing machine body and used for enabling filtered cutting liquid to flow back into the liquid spraying assembly. By means of the technical scheme, the cutting fluid collecting device is used for solving the technical problem that in the prior art, when cutting fluid is collected and secondarily utilized, the cutting fluid flows into the collecting tank, is subsequently filtered and then is poured into the fluid storage tank, and then operation is tedious.

The present application relates to gear machining technical field, especially a kind of variable tooth thickness modification machining method for double lead worm gear and worm, including the wave form distortion rate of idle cutting force of hobbing cutter and torsional stiffness coefficient;Real-time monitoring cutting force wave form distortion rate and tool torsional deformation, calculate disturbance intensity index to divide disturbance level and set detection opportunity;Through the tooth thickness curve of actual measurement, tooth thickness change rate coefficient is obtained to judge machining quality;The tooth thickness deviation curve of unqualified tooth groove is analyzed to determine the dominant interference type, and the spindle speed or tool pose is regulated based on disturbance level;The control effect is verified by attenuation coefficient;When not up to standard, attenuation difference is used to optimize control coefficient;Finally, the overall quality of worm is evaluated by the consistency coefficient of tooth thickness change rate of each tooth groove of full tooth surface.The present application solves the problem that the full tooth surface consistency of formed worm is low due to the resonance and deformation disturbance of asymmetric characteristics of hobbing cutter in variable tooth thickness worm machining.

The invention relates to a method for the hard finish machining of gear teeth on a workpiece by means of generating grinding using a geometrically undefined cutting edge, in which a grinding worm, in particular a multi-head grinding worm with bonded abrasive grains, in particular made of CBN or diamond, is brought into machining engagement with the gear teeth at a machining position, the invention relates to a method for machining a grinding worm in a batch of workpieces, and the grinding worm is re-profiled after machining one or more workpieces in the batch of workpieces so as to be subjected to material removal and thus reduce the central pitch diameter of the grinding worm before the grinding worm is used for additional machining, the profiled member is positioned relative to the worm thread orientation by means of the axis of rotation, in which the material removal takes place at a profiled position, in particular different from the machining position, in which the metal material for bonding the abrasive particles is removed.

A worm wheel (100) is provided with: teeth (20) which are formed on the outer periphery and which mesh with a worm shaft (6); a tooth bottom (30) formed between adjacent teeth (20), the tooth bottom (30) having: a central portion (31) which forms a predetermined range in the axial direction so as to include the center of the worm wheel (100) in the axial direction, and which has the same distance from the center of the worm wheel (100) in the radial direction; and curved surface parts (36) which are respectively formed at both end parts of the central part (31) in the axial direction, extend to both end parts of the tooth bottom (30), and have a distance in the radial direction from the center of the worm wheel (100) that increases as the distance approaches both end parts of the tooth bottom (30), the teeth (20) being provided with: helical tooth parts (21) that are continuous with the central part (31); and a worm gear tooth section (26) connected to the curved surface section (36).

The utility model discloses a precise worm gear hobbing device which comprises an upper tool, a precise worm gear, a lower tool and a high-precision hobbing cutter, wherein the precise worm gear and the lower tool are sequentially arranged at the bottom of the upper tool, and the high-precision hobbing cutter is arranged on the side face of the precise worm gear. A workbench is installed at the bottom of the lower tool. The upper tool comprises a center plate and a workpiece gland installed at the bottom of the center plate. The bottom of the workpiece gland is in contact with the top of the precise worm gear; the upper tool and the lower tool are arranged at the top and the bottom of the precise worm wheel respectively, the spring chuck is tightened and opened through cooperation of the push-pull rod, the precise worm wheel can be firmly fixed, machining deformation is effectively prevented, and the positioning precision and the machining precision are improved. When the model of the precise worm gear is replaced every time, only the workpiece gland, the conical supporting sleeve and the spring chuck need to be replaced, time and labor are saved, operation is easy, and the rotation stopping screw is screwed into the conical supporting sleeve to abut against the spring chuck, so that the spring chuck can be prevented from rotating and displacing relative to the conical supporting sleeve.

The present invention provides a method for blunting the sharp angle of the tooth end of a Torsen differential worm gear, belonging to the field of differential processing technology. Debugging: vertically clamp the worm gear to be blunted on the workpiece clamping mechanism; adjust the position of the grinding wheel until the starting end of the assembly section of the grinding bar is engaged with the end position of the worm gear to be blunted, and keep the worm gear to be blunted and the assembly section of the grinding bar loosely engaged; control the rotation of the grinding wheel, at this time, control the grinding wheel to move downward longitudinally, and stop the longitudinal movement of the grinding wheel when the cutting sound is heard, completing the blunting of the sharp angle of the top end surface of a tooth of the worm gear to be blunted; after debugging, it is only necessary to control the workpiece clamping mechanism to disassemble and assemble the workpiece, and after each workpiece or an end face of the workpiece is processed, it is necessary to ensure that the feed mechanism resets the grinding wheel, and keep the assembly section of the worm gear to be blunted engaged with the grinding bar before starting processing. The present invention has the advantages of high efficiency.

The invention discloses a worm and gear grinding device, and relates to the technical field of worm and gear grinding, the worm and gear grinding device comprises a chassis, a rack assembly, a lifting assembly, a positioning assembly and a grinding force control assembly, the rack assembly is mounted on the chassis, the lifting assembly and the positioning assembly are both mounted on the rack assembly, and the grinding force control assembly is mounted on the lifting assembly. The lifting assembly is used for driving the worm to ascend and descend relative to the worm gear, the positioning assembly is used for positioning the worm gear, the worm gear is meshed with the worm, the worm can rotate, and the grinding force control assembly is installed on the positioning assembly. And the grinding force control assembly is used for controlling the grinding force between the worm gear and the worm. The grinding force can be controllable and stable, and efficient and precise grinding of the worm gear and the worm is achieved.

The utility model discloses a gear hobbing machine for machining a worm gear of an electric actuating mechanism, which is characterized in that a plurality of different types of hobbing cutters are arranged on a rotating frame, when the hobbing cutters need to be replaced, the rotating frame is driven by a geneva wheel mechanism to intermittently rotate at a fixed distance, and then the needed hobbing cutters need to be replaced for use. In addition, the hobbing cutter can be rapidly replaced through the supporting and connecting part and the limiting nut, due to the fact that the side, away from the second motor, of the driving rod is exposed out of the gear hobbing machine body, the hobbing cutter needing to be used subsequently can be installed on the rotating frame without shutdown, shutdown replacement is not needed, and the hobbing cutter is more rapid and convenient to change.

The present invention provides an apparatus and method for machining a worm shaft of a double enveloping worm gear consisting of a worm shaft and a worm wheel, and is characterized by the fact that the worm shaft can be moved in the X-axis, the worm machining cutter can be moved in the Y-axis and Z-axis, the worm shaft can be rotated in the A-axis, the cutter can be rotated in the C-axis, and the shaddle on which the cutter is installed can be tilted in the B-axis, making the worm shaft machining process easy.