336 results about "Honing" patented technology

The invention discloses a multi-station cooperative hydraulic valve element inner hole fine polishing and rolling workbench which comprises a base, a lifting seat is arranged in the base, a controller is arranged on one side of the base, the multi-station cooperative hydraulic valve element inner hole fine polishing and rolling workbench further comprises a multi-station machining assembly, and the multi-station machining assembly is arranged in the lifting seat. The invention relates to the technical field of hydraulic valve element production equipment, hydraulic valve elements are fixed through fixing stations which are annularly distributed at equal intervals, and the hydraulic valve elements are sequentially conveyed to the positions below the machining stations, so that a multi-station machining array conducts corresponding machining operation on inner holes of the multiple hydraulic valve elements at the same time; and the workpiece is rotated and moved for multiple times, so that the inner hole of the hydraulic valve element is sequentially subjected to all procedures of preliminary honing, blowing cleaning and fine polishing rolling, the production procedures are simplified, the production efficiency and the machining precision of machining of the inner hole of the hydraulic valve element are remarkably improved, and therefore the requirement for large-scale production is met.

The invention discloses a design method of a complex shape modifying and finishing wheel and a honing wheel for internal meshing powerful gear honing, and relates to the technical field of machine manufacturing. The method comprises the following steps: establishing a trimming wheel tooth surface numerical model, and judging whether the modification amount of the trimming wheel tooth surface numerical model meets the modification requirement or not; if yes, establishing a space coordinate conversion relation and a conjugate meshing equation of the dressing wheel and the honing wheel, and establishing a honing wheel tooth surface numerical model in combination with the dressing wheel tooth surface numerical model; according to the space coordinate conversion relation between the workpiece gear and the honing wheel and the honing wheel tooth surface numerical model, a complex modification workpiece gear tooth surface numerical model is established, and whether the modification amount of the complex modification workpiece gear tooth surface numerical model meets the modification requirement or not is judged; and if yes, a dressing wheel three-dimensional solid model and a honing wheel three-dimensional solid model are established according to the dressing wheel tooth surface numerical model and the honing wheel tooth surface numerical model respectively. According to the method, precise design and verification of the complex shape modifying and finishing wheel and the honing wheel for powerful gear honing can be achieved.

The invention discloses precise honing equipment for a planetary reducer sun gear, and particularly relates to the field of sun gear finish machining, the precise honing equipment comprises a honing shell and an operation table fixedly connected in the honing shell, an angle adjusting assembly is installed on the operation table, and the output end of the angle adjusting assembly is connected with a first motor; the angle adjusting assembly is used for driving the first motor to move in the preset direction, the output end of the first motor is fixedly connected with a telescopic rod, the first motor is used for driving the telescopic rod to rotate, the telescopic rod is fixedly connected with a honing wheel, and the two sides of the operation table are fixedly connected with a first positioning support and a second positioning support correspondingly. Uniform radial expansion clamping is carried out from the inner hole of the sun gear through a conical rod-expansion block mechanism, centering clamping with the inner hole of a workpiece as the standard is achieved, clamping deformation is greatly reduced, the original precision of the workpiece is ensured, a reliable standard is laid for subsequent high-precision honing, and the yield is increased.

The invention discloses an internal tooth powerful gear honing machine machining tooth direction adjusting method and device and a gear honing machine. The adjusting method comprises the steps that the tooth direction error and the taper error of a honing wheel of the gear honing machine and a to-be-machined gear workpiece are determined, a honing wheel frame is rotated to rotate around a tool rest stand column, and the meshing angle of the honing wheel and the gear workpiece is changed for tooth direction compensation; the tool rest stand column is rotated around the machine body of the gear honing machine, the angle of the tool rest stand column is changed to adjust the angle of the gear workpiece, and taper compensation is conducted; and finally finishing the adjustment of the machining tooth direction of the gear honing machine. By controlling the rotation amount of the honing wheel frame and the tool rest stand column, the tooth direction error and the taper error between the gear workpiece and the honing wheel are compensated, the gear workpieces in different tooth directions are machined under the condition that the honing wheel is not trimmed, the material cost and the time cost are reduced, and the machining efficiency is improved.

The invention belongs to the technical field of connecting rod machining, and discloses a method for improving the honing machining cylindricity of a connecting rod, and the method comprises the following steps: S1, optimizing honing machining parameters; s2, a workpiece clamping mode is improved; s3, selecting an improved honing tool; s4, enhancing the control of the cooling liquid system; s5, monitoring and real-time feedback in the machining process are enhanced; s6, earlier-stage treatment of the workpiece is enhanced; and S7, adopting a dynamic compensation technology. A special flexible clamp and supporting points in reasonable layout are adopted for clamping and supporting the workpiece, the stability of the workpiece is greatly enhanced, the deformation problem in the machining process is avoided, meanwhile, a high-performance honing stone and an optimized cooling liquid system are selected, the grinding effect and the heat management capacity are further improved, and the machining efficiency is improved. By means of the method, powerful guarantee is provided for high-precision machining, by means of implementation of the comprehensive measures, the machining quality of the connecting rod is greatly improved, and the controllability and stability of the production process are remarkably enhanced.

The invention relates to a machining method of a high-precision thin-walled pipe, which belongs to the technical field of thin-walled pipe machining and comprises the following steps: preparing a to-be-machined pipe fitting, respectively carrying out rough turning on the outer circle and the end face of the to-be-machined pipe fitting, and carrying out rough boring and fine boring on an inner hole in sequence; the to-be-machined pipe fitting is assembled on a lathe, multiple sections of annular grooves formed at intervals are turned in the axial direction of the to-be-machined pipe fitting, and the axial length of each annular groove is smaller than the length of the honing head; the to-be-machined pipe fitting is clamped with the outer circle of the to-be-machined pipe fitting as the standard, and the inner hole is axially honed to the designed size through a honing head; and the to-be-machined pipe fitting is assembled on a lathe, the annular flange arranged between every two adjacent annular grooves is selected to be subjected to axial turning and material removing, and the thin-wall pipe fitting is obtained. The problem that the rigidity of a thin-walled structure is insufficient in the machining process is effectively solved, the follow-up finish machining difficulty caused by deformation is reduced, finally the form and location tolerance requirements of coaxiality, end face perpendicularity and the like of a workpiece can be met, and the machining qualification rate and the process stability of the high-precision thin-walled pipe are improved.

The present invention relates to the technical field of integrated boring and honing machine tools, and specifically to an intelligent integrated boring and honing machine tool for differential case processing, which effectively solves the problems of being unable to quickly change the boring and honing modes, being unable to protect non-working tools during use, and being unable to perform multi-directional positioning of the housing; the machine tool comprises a machine tool body, a guide frame is fixedly connected to the lower side wall of the machine tool body, a support frame is fixedly connected to the middle part of the upper end of the guide frame, a positioning assembly is provided in the support frame, a differential case is provided in the middle of the positioning assembly, and two left-right symmetrical protective shells are slidably connected to the upper end of the guide frame; the present invention can utilize the cutter disc to integrate the boring tool and the honing tool by arranging a cutter assembly, a rotating assembly and a cutter disc, the cutter assembly and the rotating assembly cooperate, and the tool is automatically switched and rotated by motor drive, without the need for manual replacement of the machine tool, reducing the time consumption of mode switching, realizing integrated boring and honing processing, and improving processing efficiency.

The hydraulic stand column remanufacturing production line comprises a cylinder body repairing production line and a hydraulic part assembling production line which are arranged on the two sides of a main channel correspondingly. The cylinder body repairing production line comprises a process joint welding area, a raw material storage area, a repairing line raw material warehousing area, an outer circular surface repairing area, an inner circular surface repairing area, a honing buffer area, a deep hole honing area and a process joint cutting area which are arranged in sequence; the hydraulic part assembly production line comprises an assembly line raw material warehousing area, an assembly line material storage area, a cylinder body cleaning area, an assembly area A, an assembly area B and an assembly finished product storage area which are sequentially arranged. Workpieces are transferred through the truss manipulator and the AGV. Automatic surface repairing operation and automatic assembling operation of the heavy-weight cylinder workpiece can be automatically achieved, the automation degree is high, the labor cost can be greatly saved, the working efficiency and the production efficiency are improved, and meanwhile the assembling quality can be effectively guaranteed.

The utility model relates to steering oil cylinder inner hole honing equipment which comprises a base, an installation bottom plate is installed on the upper surface of the base, a plurality of hollow rotating shafts are rotatably installed on the upper surface of the installation bottom plate, a plurality of through grooves are coaxially formed in the hollow rotating shafts in an array mode, first wedge-shaped blocks are arranged in the through grooves, and pressing rings are arranged on the upper sides of the hollow rotating shafts. A plurality of second wedge-shaped blocks are installed on the lower surface of the pressing ring, the second wedge-shaped blocks are matched with the first wedge-shaped blocks, and a fixing mechanism is arranged between the pressing ring and the hollow rotating shaft; and a driving mechanism capable of driving the plurality of hollow rotating shafts to rotate simultaneously is arranged on the upper surface of the mounting bottom plate. The multiple oil cylinders are inserted into the multiple hollow rotating shafts respectively and fixed, then the driving mechanism drives the multiple oil cylinders to rotate at the same time, the first hydraulic cylinder drives the honing head to ascend and descend in the oil cylinders, and therefore the purpose of honing the multiple oil cylinders at the same time is achieved, the working efficiency is greatly improved, and the honing machine meets the machining requirement of batch production.

Provided is a drill that has excellent cutting blade durability and chip discharge. A cutting blade that is provided to a body of the drill has a chisel edge, a first blade, and a second blade. In plan view from a direction along the rotation axis, a boundary section where a boundary between the first blade and the second blade is located has a protruding shape toward the leading side in the rotation direction. The first blade has a first honing surface, the second blade has a second honing surface, and the chisel edge has a third honing surface. In plan view from a direction along the rotation axis, the width of the third honing surface decreases toward the outer periphery of the body, and the width of the first honing surface at the boundary section is smaller than the maximum value of the width of the first honing surface.

The finishing tool comprises a honing rod finishing unit and a thrust regulation and control unit, a thrust regulation knob in the thrust regulation and control unit is rotated to push a push piece seat to drive a push piece to move in the axial direction along a guide groove of a dresser mandrel sleeve in the honing rod finishing unit, and the honing rod finishing unit is driven to finish finishing of the honing rod. The pushing piece moves in the radial direction of the dresser core shaft sleeve to apply pushing force, and the to-be-dressed honing rod is tightly held by the dressing strip under the radial pushing force effect of the pushing piece; the honing machine is started to control the to-be-finished honing rod to do rotary motion and reciprocating linear motion relative to the precise finishing device of the honing rod, and finishing of the honing rod is completed; by means of the finishing method, dependence on skills of operators in the machining process is reduced, precise finishing of the honing rod can be conveniently and rapidly achieved, the finishing efficiency of the honing rod is improved, the service life is long, and automatic finishing of the honing rod is easy to achieve.

The invention relates to a zirconia ceramic pump body deep hole nanoscale honing process and honing head, and the zirconia ceramic pump body deep hole nanoscale honing process comprises the steps that a composite honing head with a coarse grinding section and a fine grinding section is adopted, and a preset gradient machining process is executed on a target zirconia ceramic pump body; according to the zirconia ceramic pump body deep hole nanoscale honing process and the composite honing head, the gradient machining process is combined with the design of the composite honing head, machining parameters, cooling liquid types and temperature control strategies are dynamically adjusted at different stages, the whole process optimization from rough machining to superfinishing is achieved, and the machining efficiency is improved. The method has the effects of improving the machining efficiency, reducing surface defects and avoiding thermal stress cracks.

The invention discloses an inner circle surface cluster magnetic jet polishing device and method, and belongs to the technical field of polishing equipment.The magneto-rheological polishing and jet polishing are combined, that is, magneto-rheological polishing liquid is jetted out of a liquid outlet of a cluster magnetic jet polishing head at a high speed under the high-pressure effect, efficient jet rough polishing is conducted on the inner circle surface of a workpiece, and the inner circle surface is polished. And meanwhile, under the action of the magnetic field, the magnetorheological polishing liquid is converted into a magnetorheological polishing pad and a flexible clamping abrasive for secondary fine polishing, so that the problems of workpiece deformation and poor surface quality easily caused by traditional honing and polishing are solved, the defect of low efficiency of single magnetorheological polishing is overcome, and the polishing efficiency and the surface quality are improved. Besides, the device can adapt to workpieces with different diameters by replacing cluster magnetic jet polishing heads and workpiece discs with different sizes, and the machining requirements of the workpieces made of different materials are met by matching with adjustable polishing liquid pressure, flow and rotating speed parameters; due to the expanded double-station design, the machining efficiency is improved, and the machining requirements of high-quality inner circle surface parts are met.

The invention provides an internal gearing numerical control powerful gear honing machine and a using method thereof. The internal gearing numerical control powerful gear honing machine comprises a horizontal lathe bed, and the lathe bed is provided with a Z-axis sliding table conducting Z-direction feeding movement; the machine body is provided with an X-axis honing head sliding table which performs feeding movement in the X direction, the sliding table carries a swinging A-axis crossed-axis angle adjusting shaft, the A-axis crossed-axis angle adjusting shaft is fixedly connected with a B-axis honing wheel main shaft which is of a hollow structure and is provided with a honing wheel cutter, and internal meshing continuous generating rotation is achieved; the machine body is provided with a W-axis tailstock sliding table which performs feeding motion in the Z direction, the W-axis tailstock sliding table is provided with a tailstock adjusting seat which adjusts the position of a tailstock shell in the X direction, the tailstock shell is eccentrically and adjustably provided with a tailstock through a bolt, and the axis of the tailstock is adjusted to be equal to the axis of a honing wheel in height; the lathe bed is provided with a U-axis automatic tool setting device, and the U-axis automatic tool setting device moves in the X direction to achieve automatic control over the tool setting position. The device is high in integration design, compact in structure and easy to maintain; automatic clamping is achieved, and high-precision positioning and machining are achieved; the transmission is efficient, stable, safe and reliable.

The invention discloses a thin-wall hole honing precision control method, and aims to solve the problems that a thin-wall hole structure is weak in rigidity, is easy to deform during honing and affects the honing precision by analyzing and testing the process of removing a force control feeding honing material. A prediction model of the aperture increment of the thin-wall hole under the action of single honing and a cutting depth formula of the oilstone under different feeding pressures are obtained, and a honing aperture prediction model is established according to the prediction model; carrying out deformation simulation research on the thin-wall hole in force control feeding honing, and correcting the prediction model; and finally, establishing a thin-wall hole honing precision control method in a force control feeding mode on the basis of the hole diameter prediction model, and verifying the thin-wall hole honing precision control method. According to the method, the deformation conditions of different sections of the thin-wall hole in the honing process can be predicted, compensation is conducted according to the deformation conditions, and the honing precision of the thin-wall hole is effectively improved.

To machine at least one portion in a circumferential direction of an inner surface having a circular cross section of a workpiece so as to be recessed more than the other portion with high accuracy in a small number of processes by honing.SOLUTION: A honing method uses a honing machine 1 that includes: a rotatable tool shaft 2; a plurality of grinding stones 4 arranged on the tool shaft 2 so as to advance and retreat in a radial direction and rotating integrally with the tool shaft 2; tapered cones 7 connected to the tool shaft 2 and vertically moving to advance and retreat the plurality of grinding stones 4 in the radial direction; and a tapered cone drive part vertically driving the tapered cones 7. The honing method comprises: creating a timing chart so as to vertically move the tapered cones 7 in accordance with a recess of the inner surface of the circular cross section; and controlling the drive part of the tapered cones 7 in accordance with the timing chart to vertically move the tapered cones 7 while expanding or contracting a diameter of the plurality of grinding stones 4, thereby grinding the inner surface of the circular cross section.SELECTED DRAWING: Figure 1

The invention relates to the technical field of remanufacturing, in particular to a beryllium bronze piston part inner wall damage repairing method which comprises the following specific steps: S1, defect inspection; s2, preparing an electrode bar; s3, electric spark coating repair is carried out; s4, remelting by a cold welding machine; s5, heat treatment; s6, honing an inner hole; s7, repairing and verifying; according to the method, a method of electric spark coating repairing and cold welding composite repairing is adopted, the problem that an electric spark coating repairing layer is not compact is solved, the problem that wire feeding is difficult in the cold welding inner hole repairing process is solved, the problem that an overlong electrode bar rotating at a high speed shakes in the electric spark coating repairing process is solved by adopting the specially-made electrode bar, and the welding quality is improved. The metallographic phase of the repair layer does not have cracks and incomplete fusion defects, the repair layer is metallurgically bonded with the substrate, and the hardness of the repair layer reaches more than 90% of that of the substrate of the plate.

The invention provides a design method of a full-life diamond roller for a powerful inner honing wheel. The design method comprises the steps that design parameters of the diamond roller are determined according to parameters of an outer gear and the inner honing wheel; the design parameters of the diamond roller comprise a normal modulus Mn, a circle dividing normal pressure angle Afn, a helix angle Bf2, a tooth number Z2, a displacement coefficient Xn2, an addendum circle diameter Deg2, a root circle diameter Dig2 and an effective starting circle diameter dyx2; and calculating the addendum circle diameter and addendum width of the diamond roller. According to the parameters of the new inner honing wheel and the old inner honing wheel, design parameters of the two sets of diamond rollers are determined respectively, and then the design parameters of the full-life diamond roller are obtained through intersection; the tooth crest width of the diamond roller is checked, it is guaranteed that the tooth crest does not become sharp, parameters of the diamond roller are optimized, the optimality of the honing process is guaranteed, the diamond roller is designed only in 20 minutes at present, and compared with dozens of hours in the prior art, efficiency is greatly improved, and the new product development period is shortened.

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 utility model relates to the technical field of honing clamps, in particular to a clamping device for a rounding honing head, which comprises a honing head body and a clamping assembly, the honing head body is transversely arranged on the cylindrical grinding machine, the honing head body is connected with the cylindrical grinding machine through the clamping assembly, the cylindrical grinding machine drives the honing head body to rotate, the cylindrical grinding machine rounds a honing head oil stone strip on the honing head body, a honing solution which is efficient, economical and easy to manage is provided, the overall competitiveness of the manufacturing industry can be improved, and the honing head is suitable for being popularized and used. And greater economic benefits are brought to enterprises.

The invention relates to the technical field of ceramic sleeve machining, and discloses a ceramic sleeve inner hole grinding device based on an ultrasonic vibration auxiliary structure, which comprises a machine base with a workbench, a supporting plate fixedly connected to the machine base is arranged at the lower end of the workbench, a connecting sleeve rod is arranged below a main shaft of the machine base, and a honing head body is clamped at the lower end of the connecting sleeve rod. The machine base and the connecting sleeve rod are jointly provided with an ultrasonic vibration part. The ceramic sleeve inner hole grinding device based on the ultrasonic vibration auxiliary structure can effectively solve the problems that in the prior art, ceramic sleeve cracking can be caused by too large grinding force or instant impact; the problems that clamping is not easy when horizontal honing is adopted, oilstone on the lower portion bears larger cutting force under the action of the gravity of a ceramic sleeve, abrasion of the oilstone is uneven, and ceramic abrasive dust is difficult to effectively discharge, oilstone air holes are prone to being blocked, the grinding efficiency is reduced, friction heat generation is intensified, and the machined surface is scratched when vertical honing is adopted in the prior art are solved.

The honing tool structure comprises a clamping sleeve and a fixing rod, the clamping sleeve is provided with a through hole allowing a part to be machined to penetrate through, the through hole is in clearance fit with the outer wall of the part to be machined, the peripheral face of the clamping sleeve is provided with a threaded hole, the threaded hole is communicated with the through hole, one end of the fixing rod is provided with external threads, and the other end of the fixing rod is provided with external threads. The external thread is connected with the threaded hole in a matched mode, after connection, the end of the external thread abuts against and is fixed to the to-be-machined part, after fixing, an operator can conveniently sleeve the inner hole of the to-be-machined part on the honing head by holding the fixing rod with the hand to conduct honing machining, operation is convenient, and meanwhile the safety risks such as falling of the part are greatly reduced.

The present invention provides a production method for small-diameter thick-wall titanium alloy seamless tubes, comprising: Step 1: obtaining a titanium alloy ingot through three times of VAR melting; Step 2: blooming, drawing out, and radial forging the titanium alloy ingot into a round bar, and machining the round bar into a hollow tube blank through deep hole drilling, internal honing, and external turning; Step 3: performing three passes of cold rolling on the hollow tube blank to produce a finished titanium alloy seamless tube; sampling the titanium alloy tube after each pass of cold rolling, observing its crack defects, removing the crack defects, and performing intermediate vacuum annealing after removing the crack defects; Step 4: performing vacuum annealing, straightening, pickling, ultrasonic testing, and packaging on the titanium alloy finished tube in Step 3 to produce a small-diameter thick-wall titanium alloy seamless tube. The present invention comprehensively formulates measures from aspects such as tube blank specification design, tube blank processing technology, titanium alloy tube cold rolling process design, vacuum annealing process design, and internal and external surface defect treatment technology of the tube blank to solve the problem of internal surface cracks in cold rolling of small-diameter thick-wall titanium alloy seamless tubes.

The invention relates to the technical field of mechanical manufacturing and machining, in particular to a dressing wheel and honing wheel design method for improving contact line stability in the gear honing machining process. Based on workpiece gear parameters, a left and right tooth surface mathematical model is established, a honing process space coordinate conversion relation is established, a conjugate meshing relational expression is derived by combining the relative slip speed of meshing contact points and a normal vector, and a tooth surface contact line model is established; and the calculation modeling of the two-dimensional projection of the left and right tooth surface contact lines, the projection intersection point position and the variation under the same rotation angle is realized. And a honing wheel dressing contact line model under dressing wheels with different tooth numbers and a tooth surface contact line intersection projection model in the dressing and honing process under the tooth number difference are established. A honing wheel and variable tooth number dressing wheel design method is provided, and geometric and technological parameters of the honing wheel and the variable tooth number dressing wheel are determined; and a trimming and honing two-degree-of-freedom conjugate meshing relation and a modified tooth surface numerical model are constructed and verified, discretization and point cloud processing are conducted on the model, high-precision tooth surface point cloud is obtained, and accurate machining of a trimming wheel and a honing wheel is guided.

The invention discloses a simulation modeling method for undeformed cuttings in the honing process of internal meshing powerful gear honing, which comprises the following steps of: firstly, analyzing a space coordinate motion relationship between a honing tool and a gear workpiece in the machining process of internal meshing powerful gear honing, and establishing a coordinate transformation mathematical model between a honing tool coordinate system and a gear workpiece coordinate system; then obtaining tooth surface point cloud data of the workpiece tooth socket and the honing wheel working tooth, establishing a three-dimensional model of the workpiece tooth socket and the honing wheel working tooth, and obtaining a three-dimensional simulation model with mutually matched spatial poses of the workpiece tooth socket and the honing wheel working tooth; and finally, motion parameters of a workpiece tooth groove and honing wheel working teeth are solved, honing process simulation is conducted, and an undeformed cutting model is obtained. According to the method, the high-precision three-dimensional simulation model is constructed by utilizing the point cloud data, accurate matching of the honing wheel and the workpiece space poses is realized, the undeformed cutting model is efficiently generated, and a reliable basis is provided for gear honing machining optimization.

The invention discloses a pressure self-adaptive regulation and control method for an oil pressure driving honing head, and relates to the technical field of honing head pressure control evaluation, and the method comprises the steps: integrating multi-source sensor data, including honing head vibration amplitude, oil pressure system pressure fluctuation frequency and main shaft motor load current, and comprehensively calculating a honing state index; therefore, the processing state is accurately evaluated. The method has the technical effects that early-stage signs of abnormal machining can be automatically identified, for example, safety, early warning and abnormal states are distinguished through threshold interval division of honing state indexes, and corresponding pressure adjustment strategies are executed. The current pressure is maintained in the safe state, proportional regulation and control are carried out in the early warning state to slightly correct the pressure, and great adjustment or emergency shutdown measures are taken in the abnormal state, so that machining quality reduction or equipment damage caused by pressure inadaptation is effectively avoided. According to the method, continuous self-adaptive regulation and control in the machining process are achieved, the manual intervention requirement is reduced, the honing precision, the equipment reliability and the production efficiency are improved, meanwhile, the fault risk is reduced through the early warning and shutdown functions, and the method is suitable for high-requirement precision machining scenes. And monitoring and adjustment are executed circularly, so that the stability and consistency of the whole machining process are ensured.

The invention relates to the technical field of hidden line honing machining, in particular to a self-deflection shape follow-up guiding ultrasonic honing device for hidden line machining. In order to solve the problems of poor honing processing quality and low processing efficiency caused by unstable attachment of oilstone and the side surface of a shady line and fluctuation of grinding force when a shady line honing processing device in the prior art is used for processing the shady line, the invention provides a novel self-deflection follow-up guide ultrasonic honing device for processing the shady line. Comprising a self-deflection shape follow-up guide honing mechanism, an ultrasonic vibration mechanism and a spherical hinge mechanism. The self-deflection shape follow-up guide honing mechanism comprises a honing shell, an expansion core and a plurality of inclined blocks. An auxiliary seat is arranged above each inclined block, a center bolt is arranged in the middle of the position between each auxiliary seat and the corresponding inclined block, a torsional spring is arranged on each center bolt in a sleeved mode, and a profiling oilstone is fixed to each auxiliary seat. It is ensured that the side wall of the profiling oilstone is attached to the side face of the negative line through torsion spring compensation, and the surface roughness is effectively reduced.

A cutting tap is provided which suppresses breakage and wear of a blade during tapping and has high durability. In a nitriding treatment step (P2), a nitrogen diffusion layer in which nitrogen atoms contained in an atmosphere gas diffuse from the surface of a tool base material of the cutting tap under heating is formed, and then, in a honing treatment step (P3), an abrasive particle is made to collide with a cutting blade portion of the tool base material of the cutting tap to round the cutting blade portion and remove a blade tip. The cutting blade portion is made to have a thick nitrogen diffusion layer in advance by diffusion from a rear clearance face and diffusion from a front rake face, and the nitrogen concentration and hardness of the blade tip of the cutting blade portion are relatively high and mechanically brittle. Therefore, by removing the mechanically brittle blade tip, wear and breakage of the cutting blade portion of the cutting tap are reduced, and a tool performance capable of maintaining good cutting performance for a long period of time can be obtained.

The invention discloses a device and method for free honing machining of a straight tooth inner gear ring. The device comprises a three-axis vertical machine tool, a honing wheel clamping cutter handle, a cylindrical spiral gear honing wheel, a gear ring clamping structure, a gear ring clamp center positioning ring, a gear ring clamp rotary table, a gear ring clamp rotary table main shaft, a gear ring clamp dip angle adjusting seat, a gear ring clamp base positioning reaming hole, a gear ring clamp dip angle fixing screw and a gear ring clamp dip angle adjusting seat hinge pin. The gear ring clamp comprises a gear ring clamp base, a dip angle positioning reference cylinder and a dip angle positioning column. Free honing machining of the straight tooth inner gear ring is achieved through cooperation of movement of a common three-axis vertical machine tool and the design of a special clamp, and the equipment cost of honing machining is reduced; through the ingenious design based on the dip angle positioning column and the dip angle positioning reference column, honing of a straight tooth inner gear ring of a non-parallel shaft is achieved, and the problem that in traditional parallel shaft honing, tooth-direction textures are likely to exist on the tooth profile surface through rotation and axial reciprocating motion is solved in a low-cost mode.

The present invention discloses a honing fixture for machining special-shaped cylinder bores of an engine cylinder block, comprising a fixing member and a positioning member used in conjunction with each other; wherein the fixing member comprises a mounting plate, and positioning pins matching positioning holes on a product are fixedly connected to the mounting plate on both sides; a supporting block is also arranged between the mounting plate and the product; a concave arc surface is arranged on one side of the filling block, and a convex arc surface is arranged on the other side, and the two sides of the concave arc surface contact the two sides of the incomplete arc surface of the special-shaped cylinder bore to form a complete circular hole; the diameter corresponding to the concave arc surface is the same as the diameter corresponding to the incomplete arc surface, and the center of the circle corresponding to the concave arc coincides with the center of the circle corresponding to the incomplete arc surface. This design can ensure machining accuracy.