244 results about "Gear grinding" patented technology

The invention provides a double-station gear grinding machining device and belongs to the technical field of gear machining.The double-station gear grinding machining device comprises a machining table, strip-shaped grinding teeth, a guide assembly, a first driving assembly, a second driving assembly and a rotary supporting assembly, a U-shaped support plate is fixedly arranged on the upper portion of the machining table, and the rotary supporting assembly is installed on the upper portion of the machining table; the strip-shaped grinding teeth are arranged at the bottom of the mounting plate and used for rotationally supporting a gear to be ground, the multiple sets of strip-shaped grinding teeth are fixedly arranged at the bottom of the mounting plate at intervals, the multiple strip-shaped grinding teeth can be meshed with the gear to be ground, and the first driving assembly and the second driving assembly are mounted on the U-shaped support plate. The first driving assembly is used for driving the mounting plate to intermittently move in the length direction of the machining table. Compared with the prior art, the full-automatic gear grinding operation of the gear to be ground can be achieved, and the gear grinding device has the advantages of being high in gear grinding efficiency and good in organic gear grinding effect.

The invention discloses a numerical control forming gear ring inner tooth grinding machine and a using method thereof.The numerical control forming gear ring inner tooth grinding machine comprises a lathe bed assembly, a numerical control rotary table assembly, a grinding wheel spindle assembly and a workpiece clamping assembly, the lathe bed assembly adopts a mineral casting base, the damping coefficient is larger than 10%, and a linear guide rail is installed on the lathe bed assembly; s3, grinding feeding and indexing; S4, grinding stage control; S5, track correction; S6, grinding wheel wear compensation; through a mineral casting base of the lathe bed assembly, an angle encoder of the numerical control rotary table assembly and a CBN material formed grinding wheel of the grinding wheel spindle assembly, the effect of improving the machining precision is achieved; through the steps S2, S4 and S5, the effect of optimizing the machining quality is achieved, the tooth profile error and the surface roughness are effectively controlled, and the machining quality of the inner gear ring is improved; and through S1, S3 and S6, the effect of improving the machining stability and reliability is achieved, and the machining stability and reliability of equipment are improved.

The shaft large end face floating positioning gear grinding clamp comprises a chuck base, a lower center mechanism used for positioning a workpiece is installed at the bottom of the chuck base, an upper center mechanism capable of being matched with the lower center mechanism to press or loosen the workpiece after axially moving is installed above the chuck base, and a clamping structure for clamping the workpiece is installed in the chuck base. A floating type workpiece lower end face supporting mechanism is installed on the periphery of the upper end of the chuck base and comprises a plurality of supporting columns, the supporting columns are evenly distributed on the periphery of the chuck base in a surrounding mode, and floating media are arranged between the chuck base and the bottoms of the supporting columns. The method is simple and convenient to operate; the labor intensity is reduced; the rigidity of the tool is enhanced; the gear grinding efficiency of the product is improved by more than 30% compared with the original end face positioning; the positioning end face of the workpiece is not machined, one lathe and one operator are reduced, the occupied area is small, and the total cost is reduced by more than 20%.

The invention discloses an error compensation method, system and device for gear grinding machining and a medium. The method comprises the steps that machining parameter data of a machined gear are obtained, the machining parameter data are preprocessed, and key size data of the gear are extracted; calling an error analysis module, comparing the key size data with the gear standard parameters, calculating various single machining errors, adjusting machining parameters according to the priority of the single machining errors, and determining a compensation scheme; and the new gear is machined according to the compensation scheme, compensation size data are obtained, the compensation size data and the gear standard parameters are compared, and a compensation report is completed according to the comparison result. According to the method, a'detection-compensation-remachining 'closed-loop process is adopted, a theoretical tooth shape is approximated through iterative optimization, manual intervention is reduced, the machining efficiency and the consistency of product quality are remarkably improved, the accurate machining compensation amount is generated based on error analysis and calculation, the problem that an error model does not conform to the actual machining state is solved, and the machining precision is improved. And the compensation precision and reliability are improved.

The invention discloses a machine tool grinding wheel wear identification method based on fusion dynamic signals and decoupling training, and the method comprises the steps: obtaining multi-source dynamic signals of a grinding wheel in different wear states, carrying out the feature extraction, splicing the extracted features, and obtaining fusion features; training a deep neural network model by taking the fused features and the corresponding wear states as a training set, wherein the deep neural network model comprises a feature extractor and a classifier; firstly, a deep neural network model is preliminarily trained based on a training set, preliminary network parameters of a feature extractor are frozen, decoupling training of the model is achieved, and the trained deep neural network model is obtained; and multi-source dynamic signals in the machining process of the machine tool are obtained in real time, and the abrasion state of the grinding wheel is obtained through the trained deep neural network model. Accurate monitoring of the abrasion state of the grinding wheel of the gear grinding machine tool is achieved through multi-source signals, and the accuracy and credibility of tool damage identification are improved through decoupling training.

The utility model discloses a high-precision gear shaft detachable finish machining special tool which comprises two connecting pieces, the front ends of the connecting pieces are arranged in an outer hexagon head shape, the rear ends of the connecting pieces are cylindrical, external threads are arranged on the surfaces of the rear ends of the connecting pieces, and B-type center holes are formed in the middles of the front ends of the connecting pieces. The detachable tool special for finish machining of the high-precision gear shaft is simple in overall structure, convenient to disassemble and assemble with the gear shaft, low in manufacturing cost, capable of meeting finish machining procedures of finish turning, cylindrical grinding, gear grinding and the like of gear shafts of different gear boxes, wide in application range and capable of effectively improving machining efficiency.

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.

The utility model relates to the technical field of bevel gear grinding and polishing, in particular to a bevel gear grinding and polishing device which comprises a shell, a first storage tank, a second storage tank and a grinding bin, the bottom end of the shell is fixedly connected with a base, and the top end of the shell is fixedly connected with an air cylinder. One end of the air cylinder penetrates through the second storage tank to be fixedly connected with a second piston, one side of the second piston is fixedly connected with a set of connecting rods, the other ends of the connecting rods are fixedly connected with a first piston, and the outer side of the first piston and the outer side of the second piston are slidably connected with the first storage tank and the second storage tank correspondingly; one side of the first storage tank and one side of the second storage tank are both fixedly connected with the shell, and two telescopic pipes are installed on the outer side of the connecting rod. According to the bevel gear grinding device, the first storage tank and the second storage tank are arranged, abrasive media are contained in the first storage tank and the second storage tank, and a bevel gear can be evenly and efficiently ground through the abrasive flow machining technology.

The invention discloses a disc grinding wheel forming grinding tooth surface deviation correction strategy and effect prediction method based on topology measurement, and the method comprises the steps: obtaining tooth surface deviation data through the topology measurement of a gear grinding machine online measurement system based on a nine-axis five-linkage gear grinding machine tool, extracting a tooth direction correction value through an interpolation method, and fitting an asymmetric grinding tooth direction correction curve; and an XZC three-axis linkage grinding mode is adopted, then the tooth shape deviation value after tooth direction correction movement is obtained, a tooth shape correction curve is fitted, and a new grinding wheel section shape is obtained. And according to the calculated tooth direction correction path and the re-finished grinding wheel model, a correction deviation prediction curved surface is given according to a space envelope principle. According to the method, tooth surface error correction is achieved through tooth profile modification and XZC three-axis tooth direction modification methods, complex operation of a five-axis motion correction method is avoided, and the tooth profile and tooth direction precision index of the grinding gear is obviously and efficiently improved.

The application provides a production process and a gear grinding device of a spline rubber expansion sleeve. Through fine turning and fine adjustment operations, the subsequent spline rubber expansion sleeve and the contact point of the spline tooth and the inner spline of a workpiece are ensured to be exactly the pitch circle of the inner spline. In addition, in order to facilitate the processing of the spline rubber expansion sleeve, the structure of the spline tooth is designed to be circular, and during the manufacturing of the expansion sleeve, the spline tooth and the inner taper are ensured to be processed under the condition of one-time clamping, and the centering accuracy of 0.005mm is realized, thereby realizing high-precision workpiece assembly in the industry.

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.

A hard finishing machine for machining workpieces with at least one gearing, in particular a gear grinding machine, including a spindle rotated by a motor, wherein the spindle has, at a first axial position, a first sensor system for detecting rotation of the spindle at the first axial position, wherein the first sensor system is connected to a control unit for controlling rotation of the spindle. A second sensor system is arranged at a second axial position of the spindle, which is designed to detect rotation of the spindle at the second axial position, wherein the second sensor system is connected to a measuring device, wherein a further sensor system is arranged at the first axial position of the spindle, which is designed to detect rotation of the spindle at the first axial position and is also connected to the measuring device.

The utility model relates to the technical field of gear production, in particular to a gear grinding machine for gear production, which comprises a box body, a second shell, a threaded block and a gear grinding mechanism, the upper end of the left side of the box body is fixedly connected with the second shell, an auxiliary protection device is arranged in the box body, an auxiliary gear grinding device is arranged at the right end of the threaded block, and the gear grinding mechanism is fixedly connected with the second shell. The upper end of the second shell is fixedly connected with a third motor through a support, an output shaft of the third motor is fixedly connected with the second shell through a bearing, the auxiliary gear grinding device is matched with the gear grinding mechanism, the horizontal position of a gear grinding wheel is adjusted, the working requirements of different tooth depths can be met, the working limitation is reduced, and the working efficiency is improved. And through cooperation of the auxiliary protection device and the box body, the baffle is driven by the sliding block to move, so that scraps generated by machining can be bounced on the surface of the baffle, an operator cannot be hurt, and the safety is improved.

The present application relates to worm grinding wheel gear grinding surface texture active regulation method based on micro pulse grinding. It includes the following steps: using white light interferometer to measure the surface morphology of the gear generated under the conventional grinding mode, and obtaining the accurate information of the texture ditch height; the height of the texture ditch is used as a reference to determine the micro pulse amplitude, and the pulse frequency is set to generate the micro pulse grinding program; the changed NC program is copied to the designated folder of the numerical control gear grinding machine numerical control system and replaces the original program, and the micro pulse grinding is carried out. The micro pulse grinding processing mode proposed in the present application can generate the network texture along the contact trace direction and along the direction of the tooth, which changes the single regular texture along the direction of the tooth under the conventional grinding mode, so as to help to improve the performance of the gear, reduce the surface defects, improve the surface quality, and help to reduce the meshing impact and reduce the noise.

The invention provides a gear grinding burn on-line real-time detection and early warning method based on thermal imaging, which comprises the following steps of: continuously acquiring a temperature field of a grinding contact area by adopting an infrared thermal imager, performing non-uniformity correction and process parameter synchronization on a thermal image, generating a thermal image flow with a time scale, extracting temperature and gradient characteristics through space grid division, and performing on-line real-time detection and early warning on gear grinding burns. A space-time temperature matrix and a thermal evolution vector field are constructed, a dynamic graph model is utilized to describe a thermal diffusion relation, time sequence spectrum features extracted through short-time Fourier transform are combined, the space-time temperature matrix and the thermal evolution vector field are input into a graph convolution recursive network, regional temperature probability distribution is output, and burn risk thermodynamic diagram generation and multi-level early warning are achieved. And grinding parameters are dynamically adjusted based on the node space aggregation state. According to the method, the collaborative modeling mechanism of the space-time temperature matrix and the dynamic graph structure is constructed to carry out probabilistic prediction on the temperature state of each area in multiple time steps in the future, burn omen can be recognized in a high-precision and real-time mode, risks can be actively restrained, and the gear machining quality and process safety are improved.

The utility model discloses a wandering star wheel grinding machining fixing device which comprises a working table, a supporting frame is fixedly installed on the lower bottom face of the working table, a groove is formed in the working table, and a fixing plate is fixedly installed at the lower end of the left wall face of the groove. A body is supported through balls, a transmission motor is started to drive two first connecting plates to move inwards, a first connecting rod is driven to rotate while the first connecting plates act, a second connecting plate is pulled to move forwards while the first connecting plates move, and a first straight gear and a second straight gear are meshed with the body; two driving motors are started to drive a driving shaft to rotate, so that two first straight gears are driven to rotate, a body is stabilized through a second straight gear, the body is fixed more stably, a user can further machine the body conveniently, the labor burden of the user is relieved, and the labor burden of the user is met.

The application discloses a forming gear grinding machine sensitive geometric error identification method for gear evaluation error, which comprises the following steps: establishing a grinding wheel rotary surface parameter model based on gear parameters to be machined; establishing a quantitative mapping analytical model of machine tool geometric error-gear tooth profile / helical line deviation; and identifying sensitive geometric errors affecting the evaluation deviation of the gear tooth profile / helical line. The application can identify key errors affecting the gear surface precision, provide a theoretical basis for subsequent machining compensation, and improve the forming gear grinding error compensation efficiency.

The invention discloses a transmission system gear type part and surface quality improving process method, which comprises the following steps: after carburizing, quenching and shot blasting of a part, carrying out a liquid sand blasting process to remove part burrs and redundant substances; cleaning dust and greasy dirt on the surface of the part by using a saturated steam cleaning machine after the part is heated and gear grinding is finished; strengthening shot blasting treatment is conducted on the part; after the reinforced shot blasting is completed, a cleaning procedure is carried out, and shot blasting ash generated after the reinforced shot blasting of the part is removed; after cleaning is completed, the anti-rust oil coating procedure is conducted, and an oil coating machine is used for automatically coating the parts with anti-rust oil; after anti-rust oil is coated, packaging is conducted, and the parts are sealed and packaged one by one through oiled paper and then put in storage; wherein the interval time between the working procedures of gear grinding, cleaning, reinforced shot blasting, cleaning, anti-rust oil coating and packaging does not exceed 7 days. According to the transmission system gear type part and the surface quality improving process, the surface appearance quality of the gear type part can be effectively improved, and the use performance of a product is improved.

The present application relates to the technical field of aero-engine, disclose a kind of gear end tooth repair method, comprising the following steps: S1, preparation package, after filling alloy disc powder in package, package is set on the end tooth of gear;S2, by pressure device let the end tooth of gear and package between vacuum after package brazing sealing;S3, to gear heat isostatic pressing;S4, to gear heat treatment;S5, using circular arc end tooth grinder to gear grinding processing.The alloy disc powder can be realized with the same mechanics of gear parent alloy, anti creep fatigue, no metallurgical defect connection, can effectively solve the problem of crack, poor mechanical properties, poor creep performance, poor wear resistance and so on.

The application discloses a reinforcing method for high-speed worm grinding wheel, which comprises the following steps: 1) a worm grinding wheel blank is prepared by using a dynamic balance forming technology, and the worm grinding wheel blank is dried and sintered; 2) a ceramic binder sol is prepared; 3) the ceramic binder sol prepared in the step 2) is uniformly impregnated around a central hole of the worm grinding wheel prepared in the step 1), and the worm grinding wheel for gear grinding is obtained after sintering. The worm grinding wheel prepared by the method has a static unbalance weight of less than or equal to 10 g, and the use linear speed of the worm grinding wheel can reach 80 m / s to 100 m / s through the impregnation reinforcement of the ceramic binder sol, so that the method has the advantages of simple production process, high grinding efficiency and high grinding precision.

The invention discloses a high-precision high-strength durable bevel gear machining process which comprises the following steps: S1, putting raw materials for manufacturing a blank into a 260T forming press, performing compression molding by using the forming press to obtain a blank piece, and taking out the blank piece for later use; s2, the raw materials for manufacturing the copper infiltration block are subjected to compression molding through a molding press; s3, high-temperature sintering is conducted on the blank piece and the copper infiltrated block, and a copper infiltrated blank is sintered in a nitrogen-based atmosphere; s4, the copper infiltrated blank obtained in the S3 is soaked in anti-rust oil, and the outer diameter, the inner diameter and the height size are subjected to subsequent finish turning; and S5, the workpiece obtained in the S4 is machined, rough gear hobbing, deburring and gear grinding are conducted in sequence, and a final finished product is obtained. The novel powder metallurgy process is adopted, the efficiency is improved by 40%, the material utilization rate is 95%, the energy consumption is reduced by 50%, the density of the obtained product can reach 7.5 g / cm < 3 >, the precision is 0.004 mm, the product can bear large loads without cracking, the hardness can reach HRC15-30 without heat treatment, the precision is high, the noise is low, the strength is high, and durability is achieved, and meanwhile the running noise can be reduced through the middle clearance shape.

This invention discloses a spindle structure for a gear grinding machine, belonging to the field of turning technology. It mainly includes a disassembly and assembly assembly, a housing, a mandrel, and connecting rods. The mandrel is rotatably fitted onto the housing. A connecting rod is provided at each end of the mandrel, and a disassembly and assembly assembly is provided at each end of the mandrel. Each disassembly and assembly assembly includes a connecting sleeve, a connector, a sliding head, a connecting nozzle, a stabilizing plate, a slip ring, and an extension arm. The end of the mandrel has a coaxial insertion hole. When the connecting rod is inserted into the insertion hole of the mandrel, a pressure chamber is formed between the insertion hole and the connecting rod. The connecting sleeve is fitted onto the mandrel, and its inner cavity communicates with the pressure chamber. The sliding head slides axially along the mandrel onto the housing. The stabilizing plate is mounted on the connecting rod. The slip ring is connected to the sliding head and is located near the inner end of the stabilizing plate. The extension arm is connected to the sliding head and is located near the outer end of the stabilizing plate. This spindle structure for a gear grinding machine can solve the problem of vibration caused by multiple cutting tools.

The utility model relates to the technical field of clamps, in particular to a high-precision rack grinding clamp which comprises a supporting base, a plurality of sliding rods are connected to the two sides of the supporting base in a sliding mode, connecting plates are fixedly connected to one ends of the sliding rods, a rack body is arranged between every two opposite connecting plates, and sliding plates are connected to the connecting plates in a sliding mode. The two sliding plates abut against the two ends of the rack body respectively, two guide grooves are formed in the sliding plates, two abutting plates are slidably connected to the connecting plate, guide shafts are fixedly connected to the abutting plates, the guide shafts penetrate through the adjacent guide grooves and are slidably connected with the sliding plates, and the four abutting plates abut against the two sides of the rack body respectively. A driving structure is arranged on the supporting seat; according to the gear grinding device, the two ends of a rack can be clamped and fixed while the two sides of the rack are clamped and fixed, so that the clamping firmness can be improved, the rack is prevented from moving in the machining process, and the gear grinding machining precision is effectively guaranteed.

The utility model relates to the field of gear grinding machines, in particular to a clamping tool for a gear grinding machine, which comprises a supporting seat body, a containing cavity, a pre-positioning component and a fastening structure, on one hand, the pre-positioning assembly provides a pre-positioning effect for the gear machining device, namely, a machined gear is arranged on the conical barrel in a sleeving mode, the conical barrel is pressed downwards till the machined gear makes contact with the supporting base body, and in the process, the arranged conical barrel supports the side wall of the inner ring of the machined gear; a limiting effect is also achieved on a machined gear, and follow-up workers do not need to adjust the position; and on the other hand, the position of the machined gear is pressed through cooperative use of the threaded column body and the positioning pressing disc, the inner ring position of the machined gear is pressed through the positioning pressing disc, and machining of the tooth-shaped part on the outer side cannot be affected.

The invention discloses a method for identifying geometric errors of a C shaft of a numerical control forming gear grinding machine based on a ball bar. The geometric error generation mechanism is analyzed according to the structure and transmission chain characteristics of the C-axis rotary table of the numerical control forming gear grinding machine, and a geometric error identification model of the C-axis rotary table is established based on the homogeneous coordinate transformation principle. The method comprises the following steps: building a geometric error measurement system, reasonably selecting a measurement range and an overtravel, generating an operation program, measuring to obtain a variation H delta of a ball rod, inputting a geometric error identification equation, and obtaining and separating five geometric errors delta x, delta y, delta z, epsilon x and epsilon y of a C-axis turntable under different installation modes by using the ball rod. Compared with an existing measurement method which is complex, low in stability and precision and the like, the method has the advantages that an identification model is simplified, coupling interference of other error sources is reduced, a measurement system is quickly and simply built, five motion geometric errors of the C-axis turntable can be accurately separated, and the geometric error measurement and compensation precision of the C-axis turntable of the numerical control forming gear grinding machine is improved.

The full-automatic band saw gear grinding machine comprises a bottom plate, a grinding table is arranged at the top of the middle of the bottom plate, a penetrating groove is formed in the middle of the grinding table, a band saw blade penetrates out of the penetrating groove in a sliding mode, a base is fixed to the bottom of the grinding table, and the base is fixedly connected with the bottom plate; the grinding assembly comprises a top frame, two first inclined rails are symmetrically arranged at the bottom of the middle of the top frame, a grinding disc is installed between the two first inclined rails, and cross rods are arranged at the positions, located at the front end and the rear end of the grinding disc, of the bottom of the top frame; the positioning assembly comprises a transverse plate, the band saw blade on the grinding table is intermittently pushed and dragged through the traction assembly and a transverse rod of the grinding assembly, so that each position of the band saw blade can be placed on a grinding station, and the position of a grinding disc is adjusted through the positioning assembly according to the sawtooth slope and depth of the band saw blade; therefore, the grinding disc is matched with the band saw blade.

The invention discloses a data acquisition method and system for gear grinding machining, and relates to the field of gear machining. The method is applied to a gear grinding machining control system and comprises the steps that machining process information is obtained, and the machining process information comprises multiple detection data types and machining tasks; dividing the plurality of detection data types into a plurality of processing state semantic sets; calculating fluctuation indexes of the plurality of processing state semantic sets in the processing task; determining available bandwidths of the plurality of processing state semantic sets according to the fluctuation indexes of the plurality of processing state semantic sets; based on the available bandwidth of the plurality of processing state semantic sets, determining data acquisition frequencies of the plurality of detection data types; and the data acquisition system is controlled to acquire various detection data according to the data acquisition frequencies of the various detection data types, and the various detection data are uploaded to the gear grinding parameter adjusting system. By implementing the technical scheme provided by the invention, the problem of low process parameter adjustment precision of current grinding machining is solved.

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 application relates to the technical field of gear machining, in particular to a main reduction gear grinding clamp for an automobile reduction gearbox. The clamp comprises a clamp body, an expansion sleeve structure, a positioning block and a gland. The expansion sleeve structure comprises an expansion sleeve. The expansion sleeve is a ring structure which expands outward along the radial direction to clamp the inner circle of a workpiece when moving to one side of the axial direction, and shrinks inward along the radial direction to release the inner circle of the workpiece when moving to the other side of the axial direction. A plurality of positioning bosses arranged in the circumferential direction are arranged on the axial end surface of the positioning block in contact with the inner circle of the workpiece. The positioning boss is a convex structure protruding to the inner circle of the workpiece in the axial direction, and is used for positioning the workpiece. The adjacent positioning bosses are arranged in the interval to form a recess channel for discharging grinding impurities. The gland is fixed on the main shaft of a machine tool, and is arranged on the two sides of the axial direction of the workpiece together with the positioning block. The clamp has simple structure, high discharging efficiency of grinding mud and grinding wheel dust in the grinding process, and can effectively maintain the cleanliness of the positioning surface.

The invention discloses a mechanical gear machining device and a using method thereof, and relates to the technical field of machining, the mechanical gear machining device comprises a machine box, an access door is arranged on the machine box, a support is arranged on the machine box, a hand sliding door is arranged on the support, a rotating device is arranged on the machine box, an adjusting device is arranged on the rotating device, and a polishing device is arranged on the support. The rotating device comprises a first motor which is fixedly connected to the inner wall of the bottom of the machine box. A first motor is started to enable a first rotating rod to rotate, the first rotating rod rotates to drive a first bevel gear to rotate, the first bevel gear rotates to drive a second bevel gear to rotate, the second bevel gear rotates to drive a straight rod to rotate, the straight rod rotates to drive a mounting plate to rotate, and the mounting plate rotates to drive an adjusting device to rotate and adjust, so that the gear grinding direction is conveniently adjusted; and the grinding angle diversification is improved, and the manual grinding time is shortened.