95 results about "Superfinishing" patented technology

The invention relates to the technical field of milling, grinding and polishing machine tools, and discloses a free-form surface milling, grinding and polishing machine tool which comprises a Z-axis sliding table, a first tool shaft and a second tool shaft are fixed to the Z-axis sliding table, a Z-axis feeding device is fixedly connected to the bottom of the Z-axis sliding table, and a guide rail is fixedly connected to the surface of the Z-axis sliding table. The grinding mechanism is arranged, when a workpiece quick-change chuck rotates, a workpiece can be driven to rotate, the workpiece is quickly milled, ground and polished, a workpiece shaft is fixed to a cross-shaped sliding table linearly moving in the X direction and the Y direction, switching of the operation modes of a main shaft and a positioning shaft can be achieved through a numerical control instruction, and machining of a rotary symmetric curved surface and a free-form curved surface is completed; when rough machining or semi-finish machining needs to be conducted on the workpiece, the electric telescopic rod is started to pull the supporting table to move on the surface of the guide rail in the direction of the electric telescopic rod, the tool on the first shaft is selected to be used, and when finish machining or superfinish machining needs to be conducted on the workpiece, the workpiece moves to the machining position of the second tool shaft.

The invention provides a bearing peach-shaped channel superfinishing grinding device which comprises a base, and a workpiece rotating supporting mechanism and an oilstone swinging mechanism are arranged on the base. The workpiece rotating and supporting mechanism comprises a left tip and a right tip, the left tip is provided with a drive plate and a heart-shaped chuck, and the position of the right tip in the axial direction is adjustable. A mounting seat of the oilstone swinging mechanism can be fed in the left-right direction and the front-back direction and comprises an oilstone swinging rotating shaft capable of rotating in a reciprocating mode in the axial direction, an oilstone frame is arranged at the output end of the oilstone swinging rotating shaft, an oilstone box is arranged at the outer end of the oilstone frame, oilstone is assembled in the oilstone box in the vertical direction, and the axial extension line of the oilstone swinging rotating shaft and the oilstone intersect at a point O; and an oilstone pressing rod and a hydraulic valve are arranged on the oilstone frame. The device can finish superfinishing grinding of two curved surfaces of a peach-shaped channel under the condition that one device is used for one-time clamping, meanwhile, the device can be suitable for superfinishing of a shaft workpiece with a plurality of channels, and the adverse effect of multiple times of feeding on the superfinishing grinding precision can be effectively reduced.

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 relates to a metal surface self-adaptive modified reinforced additive material and a preparation process and method thereof, which are characterized in that silicate-containing natural minerals, amorphous carbon, SiO2, metal mixed powder, a curing agent, a defoaming agent, white grease and basic lubricating oil are mixed and stirred to react for 24-48 hours in a reaction kettle at 60 DEG C to generate a gel product. Through online intervention of functional materials, modification and reinforcement of additive materials, dynamic superfinishing and solid-liquid multi-component composite lubrication, an equipment extremely-low-friction self-lubricating environment is constructed, and the purposes of reinforcement of kinematic pair friction interface material performance, dynamic optimization of matching pair gaps, targeted repair of abrasion, reduction of friction abrasion, prolonging of the service life of equipment and improvement of the energy efficiency of the equipment are achieved. And the energy consumption and the operation and maintenance cost of the equipment in the whole life cycle are reduced.

The invention relates to the technical field of superfinishing, in particular to a tool servo turning method assisted by a translation rotating platform, a medium and equipment. The five-axis lathe and the translation rotating platform are controlled to cut according to the paths of the independent areas to be machined by obtaining the cutting paths of the curved surface microlens array substrate to be machined and the cutting paths of the microlens units respectively. According to the method, the target structure is divided into the substrate area and the independent areas corresponding to the multiple micro-lens units, the independent spiral cutter cutting path is generated, the cutter path continuity is effectively improved, the method adapts to the dynamic characteristics of the machine tool servo shaft, efficient cutting parameters are conveniently selected, and the servo shaft tracking precision and the machining quality are improved. A regional step-by-step machining strategy is adopted, and each micro lens unit adopts an independent spiral cutter cutting path, so that the problems of inconsistent cutter paths and cutting state fluctuation caused by position difference in traditional single-path machining are solved, each micro lens unit is ensured to be machined under the same cutting condition, and the consistency of the machined surface of the micro lens array is remarkably improved.

A machining method for improving residual compressive stress of a raceway surface of a bearing ring relates to the technical field of bearing machining and comprises the following steps: turning a bearing ring blank, and then quenching and tempering a machined part; the surface of the ferrule raceway subjected to heat treatment is subjected to shot blasting machining strengthening; carrying out primary grinding processing on the surface of the reinforced ring raceway, and then carrying out additional tempering treatment; the surface of the ring raceway is subjected to fine grinding, and then the surface of the ring raceway is subjected to final grinding; and carrying out superfinishing on the surface of the ring raceway. According to the method, a machining procedure mutual matching strategy is adopted, the machining technological process is optimized, machining parameters of all procedures are strictly controlled in the machining process, through progressive machining of all the procedures, the surface residual compressive stress of the bearing ring raceway is gradually increased, good control over the residual compressive stress scattering difference is achieved, and the fatigue life of the bearing can be effectively prolonged. The residual compressive stress on the surface of the bearing ring raceway machined through the method is not smaller than 515 MPa, and the residual compressive stress range is not larger than 68 MPa.

The utility model provides a cutting blade. The cutting insert includes a cutting portion. The cutting part comprises a cutting edge and a chip breaker groove. The cutting edge comprises a fillet cutting edge and a side cutting edge, and the chip breaker groove is sequentially provided with a front cutter face, a transition face and a chip blocking face. The chip blocking face comprises a convex curved face and an inclined face. The upper surface is provided with a first reference surface. An intersection curve is formed at the intersection of the convex curved surface and the transition surface, and the projection of the intersection curve on the first reference surface is a first arc curve. When the first reference surface is viewed in the front, the side cutting edge is projected onto the first reference surface, and the distance between the first arc curve of the cutting part and the side cutting edge is gradually reduced in the direction from front to back, and then is gradually increased in the direction from front to back. In the superfinishing process, the cuttings of the cutting insert can be easily curled and discharged, and the cuttings processing capability of the cutting insert is improved.

This application relates to a machining process for the inner ring of a non-magnetic steel composite bearing, comprising the following steps: turning a blank into the shape of a non-magnetic steel composite bearing inner ring, and machining base surface auxiliary steps and non-base surface auxiliary steps at both ends of the inner ring, followed by heat treatment; performing rough grinding on the two end faces, outer diameter, and inner diameter of the heat-treated inner ring; performing rough grinding on the raceway, raceway, base surface sidewall, and non-base surface sidewall of the inner ring; performing fine grinding on the two end faces, outer diameter, and inner diameter of the inner ring; performing fine grinding on the raceway, raceway, base surface sidewall, and non-base surface sidewall of the inner ring; after fine grinding, grinding away the base surface auxiliary steps and non-base surface auxiliary steps; and performing ultra-precision machining on the raceway and raceway of the inner ring. This process can improve the machining efficiency of the inner ring and reduce the production cycle.

The invention relates to the technical field of superfinishing machines, in particular to an outer channel superfinishing machine for machining an agricultural machinery unit flange, which comprises a superfinishing machine, a base is arranged at the bottom of the superfinishing machine, the interior of the base is hollow, clear water is stored in the base, a filter screen is arranged in the base, a supporting block is fixed on the inner wall of the base, and the supporting block is fixed on the inner wall of the base. A filter screen is installed at the top of a supporting block through a connecting mechanism, a transverse plate is arranged at the top of an inner cavity of the superfinishing machine, a processing mechanism is arranged at the bottom of the transverse plate, chippings are generated when the superfinishing machine grinds a workpiece, a water pump is started to convey water in a base into a spray head through a water pipe and spray the chippings out, and cooling of a grinding wheel is facilitated; and the sprayed water can drive the chippings, so that the chippings enter the base through the chipping discharging groove along with the water, water treatment of the chippings is facilitated, then the chippings in the waste water are filtered by the filter screen, the filtered water returns to the spray head to be sprayed out under the action of the water pump, and cyclic utilization of the water is facilitated.

The invention provides bearing ring raceway superfinishing grinding equipment and a wire drawing process, and belongs to a bearing machining technology. The problems that a bearing manufactured through a traditional bearing super-finishing technology is short in service life and poor in quality are solved. The invention discloses a bearing inner and outer ring raceway superfinishing wire drawing process, and aims to realize that superfinishing patterns are along the rolling direction of a rolling body. According to the technological method, at the same station, the workpiece rotating speed and the oilstone swing frequency are both subjected to stepless speed regulation, rough and fine rolling of the raceway is achieved through different workpiece rotating speeds and different oilstone swing frequencies, machined patterns are in the rolling direction of a rolling body, the rough-exceeding workpiece rotating speed is lower, the oilstone swing frequency is high, the fine-exceeding workpiece rotating speed is high, and the oilstone swing frequency is low. The bearing has the advantages that the service life of the bearing is prolonged, and noise is low.

The utility model discloses a high accuracy frock suitable for slanting roof exchange processing is provided with a plurality of support feet on the bottom surface of its bottom plate, and the top surface of the bottom plate is detachably connected with a locking positioning device, the top of the locking positioning device is provided with a plug-in hole, the plug-in hole is used for receiving a slanting roof, and a plurality of inserts are arranged on the side surface of the locking positioning device to fix the slanting roof inside the locking positioning device. After the bottom plate and the locking positioning device are fixed, the slanting roof is inserted into the locking positioning device through the plug-in hole, then the insert is inserted into the locking positioning device from the side surface of the locking positioning device, and the slanting roof is fixed in the locking positioning device, so that the mold processing is facilitated. When it is necessary to replace the slanting roof, the insert can be disassembled to quickly replace the slanting roof, and the slanting roof to be processed is reloaded, so that the preparation time before superfinishing is reduced, the slanting roof is quickly replaced, the efficiency is improved, and the technical problem that the existing slanting roof superfinishing frock is fixed in a downward pressing mode, the processing coordinates need to be recalibrated after the completion of each work, and the mold needs to be reloaded is solved.

The invention belongs to the field of superfinishing of raceway surfaces, and particularly relates to a process for synchronously finishing machining of an inner raceway and a flange of a workpiece. Workpiece feeding and discharging actions can be completed through the single-shaft mechanical arm, the feeding and discharging plate longitudinally feeds and discharges the workpieces through cooperation of the two blocking strips transversely distributed at the bottom and the longitudinal air cylinder, the operation efficiency is high, the feeding and discharging online effect between two machining stations is better, the structure is more compact, and the practicability is high. And the flange grinding mechanism is used for grinding the flange surface, and the raceway grinding mechanism is used for grinding the raceway surface, so that the synchronous machining operation of the flange and the raceway can be completed through one-time feeding and discharging, the machining efficiency is greatly improved, and the machining precision is ensured.

The bearing roller superfinishing device comprises a base, a swing feeding mechanism and a workpiece driving mechanism, the swing output end of the swing feeding mechanism is connected with an oilstone frame, an oilstone groove is formed in the oilstone frame, and elastic filler is evenly laid on one side face of the oilstone groove and the bottom face of the oilstone groove; an oilstone set is embedded in the oilstone groove and comprises at least two oilstone blocks arranged in the laying direction of the elastic filler on the side face of the oilstone groove. During superfinishing, the oilstone frame is moved to drive the oilstone set to abut against the peripheral face of the roller and move in a reciprocating mode along the generatrix, the area of each oilstone block branch pipe is only the swing distance, each oilstone block can ascend and descend to adapt to the shape of the generatrix, and the effect that the original generatrix shape of oilstone is prevented from being damaged in the superfinishing process is achieved.

The utility model relates to the technical field of super finishing. In order to facilitate sorting personnel to quickly sort out super finishing workpieces from a ring conveyor belt, the utility model proposes a workpiece status detection device, wherein a base provided with a tray is located on the conveyor belt and moves with the conveyor belt; a status display is installed on the base through a pin shaft and is close to the edge of the base and can rotate synchronously around the pin shaft; an adjustment mechanism can toggle the status display to rotate around the pin shaft; a sensor is located on the side of the tray and is used to detect the state of the status display; when the processed workpiece is placed in the tray, the free end of the processing status rod is close to the detection end of the sensor, and the sensor detects that the status display is in a processing state; when the unprocessed workpiece is placed in the tray, the free end of the unprocessed status rod is close to the detection end of the sensor, and the sensor detects that the status display is in an unprocessed state. The use of the workpiece status detection device of the utility model can improve the efficiency of workpiece sorting.

This invention relates to an outer ring plastic-coated insulated bearing and its processing method, belonging to the field of insulated bearings. This technical solution adopts an integrated injection-molded plastic-coated structure. Compared with traditional plasma spraying coatings, the insulation layer has a larger thickness, higher density, and is more resistant to breakdown and wear, unaffected by assembly wear, and its insulation performance does not degrade over long-term use, fundamentally solving the problem of bearing electro-corrosion. Simultaneously, the mechanical interlocking structure formed by the dustproof groove, annular groove, and plastic-coated insulation layer of the metal outer ring significantly improves the bonding strength of the plastic-coated layer, avoiding the risks of slippage, axial movement, and peeling off. It can adapt to complex operating conditions such as high-frequency forward and reverse rotation and high-speed rotation of motors. Furthermore, this technical solution adopts a process route of segmented processing of the groove before and after plastic coating. Rough grinding before plastic coating allows for deformation allowance to accommodate injection molding thermal deformation, while fine grinding and ultra-precision machining after plastic coating correct all errors, solving the industry pain points of poor groove precision, high vibration, and high noise in traditional processes.

The invention belongs to the technical field of bearing precision machining, and relates to a spiral groove supporting rolling rod for a bearing ring superfinishing machine and application equipment of the spiral groove supporting rolling rod. The supporting rolling rod comprises a cylindrical main body, and at least one continuous concave spiral groove is formed in the working surface of the outer circle of the cylindrical main body. The spiral groove is used for reducing the contact area between the supporting rolling rod and the bearing ring and storing and conveying ultra-fine grinding liquid in the ultra-fine grinding process so as to form a continuous and stable lubricating oil film. Preferably, the spiral groove is of a multi-head spiral structure, the cross section of the spiral groove is of an arc-shaped, trapezoid or special-shaped structure, and abrasive dust can be discharged through the spiral pumping effect in the rotating process of the rolling rod. The supporting rolling rod can be made of high-carbon-chromium bearing steel, hard alloy or austenitic stainless steel, and the wear resistance is improved through surface strengthening treatment. According to the invention, friction and wear can be effectively reduced, and the lubricating stability and the chip removal capability are improved, so that the surface quality and the consistency of superfinishing machining of the bearing ring are improved.

To provide a superfinishing device of a screw shaft of a ball screw capable of sufficiently enhancing machining accuracy of superfinishing of an inner surface of a groove of a screw shaft.SOLUTION: At the time of superfinishing an inner surface of a groove of a screw shaft W, grinding wheel swinging units 4A and 4B are fixed on a sub-base table B2, and a work head 2 is moved in a direction along an axial center of the screw shaft W by a work head moving unit 3 in accordance with rotation of the screw shaft W by screw shaft rotating units 21A and 21B while swinging the grinding wheel by a grinding wheel swinging mechanism 44 in a state where the grinding wheel is in contact with the inside of the groove of the screw shaft W. As a result, machining accuracy of superfinishing of the inner surface of the groove of the screw shaft W can be sufficiently enhanced.SELECTED DRAWING: Figure 1

This application relates to the technical field of superfinishing equipment for bearing rings, and discloses a grinding device and a grinding process for superfinishing bearing rings, including a swing arm. One end of the swing arm is fixedly connected with a fixed seat. A clamping block is slidably connected inside the fixed seat. An oilstone is arranged inside the clamping block. A pressing block for fixing the oilstone is movably arranged on one side of the clamping block. In the process of the clamping block driving the fastening gear and the adjusting gear to move synchronously, the fastening gear and the adjusting gear sequentially contact the corresponding first tooth plate and second tooth plate. Thus, when the pressing block releases the clamping and locking of the oilstone, the length of the oilstone extending out of the clamping block is adjusted, and during the process of the clamping block moving towards the outside of the fixed seat, the clamping and fixing action of the oilstone and the moving-away action of the adjusting rod are sequentially and continuously completed, improving the service life of the grinding device and ensuring the grinding quality of the bearing ring.

This invention provides an ultra-precision machining device and method for the circumferential surface of rollers, relating to the field of ultra-precision machining. Addressing the problem of low machining efficiency caused by poor coordination between loading / unloading and the ultra-precision mechanism during current ultra-precision machining of rollers, this invention employs a stepped pallet for roller transfer, connecting an external loading mechanism and the ultra-precision position. After the roller's position is adjusted on the second and first platforms, the roller to be processed is accurately loaded to the ultra-precision position, and simultaneously the processed roller is lifted and moved from the ultra-precision position to the receiving plate, improving the loading speed and accuracy of the rollers, thereby increasing the efficiency of ultra-precision machining.

The invention discloses an aluminum alloy automobile covering part outer plate cold stamping forming surface quality improving method, and relates to the technical field of automobile stamping dies. The method sequentially comprises the seven steps of parting compensation treatment, dynamic flow control treatment, mold difference hardness treatment, molded surface superfinishing, difference strong pressure shaping, structured lubrication dust retention treatment and forming process reconstruction. Through a full-process integrated forming control scheme, surface product defects such as scratches, slip lines, viscosity and concave-convex points in the cold stamping process of the aluminum alloy outer plate can be effectively eliminated, the large-angle vertical face and fillet resilience is controlled to be within 0.5 mm, the die debugging difficulty and the bench worker workload are greatly reduced, the die manufacturing period is shortened, and the production efficiency is improved. And the mass production yield and forming stability of parts are improved, and the large-scale mass production requirements of new energy automobiles are met.

The application belongs to the technical field of precision machining of mechanical part surface, and aims to solve the problems of the existing process which is only applicable to small and medium batch rolling body machining, low polishing and grinding efficiency and small machining surface. A vibration superfinishing rolling and polishing device and method for bearing rolling body limiting machining are provided. The device comprises a vibration platform, a fixing assembly and a plurality of containers. The inner wall of the container comprises a first left wall, an upper wall, a second left wall, a lower wall and a right wall which are connected in sequence. The first left wall, the second left wall and the right wall are arranged in parallel. The included angle between the upper wall and the second left wall is greater than the included angle between the lower wall and the right wall. The container is provided with a rolling body, a medium and a limiting assembly comprising six limiting pieces. The distance between adjacent two limiting pieces is less than the diameter of the rolling body and greater than the diameter of the medium. The medium is in contact with the rolling body. The application can improve the roughness grade of the surface of the rolling body and realize omnibearing and mass superfinishing of the surface of the rolling body.

Summary of the Invention Super finisher for the threaded part of a ball screw The present invention relates to an apparatus (100) for superfinishing the threads of a ball screw. The apparatus comprises at least one holder (42, 52), a first interchangeable finishing tool (10) comprising a threaded portion in a working inner recess (10A), a second interchangeable finishing tool (15) comprising a working inner recess (15A) having a threaded portion, a polishing belt (20) reinforced with a slit film configured to pass continuously through the inner recesses (10A, 15A) and form an interface between the finishing tools (10, 15) and the threads (40A) of the ball screw (40), and at least one drive component (44a, 44b) configured to change the angle of the holder to enable linear movement of the finishing tools (10, 15) relative to the ball screw (40). An advantage is that during machining, the apparatus (100) supports the weight of the ball screw, thereby preventing protrusion of the ball screw.

Provided are a polishing paste for superfinishing a bearing steel, and a preparation method and use thereof. The polishing paste includes the following components: in parts by mass, 8 parts to 10 parts of stearic acid, 10 parts to 15 parts of a white oil, 15 parts to 20 parts of a liquid paraffin, 3 parts to 5 parts of oleic acid, 3 parts to 5 parts of triethanolamine, and 50 parts to 60 parts of polishing abrasives. The disclosure provides a polishing paste for superfinishing of the bearing steel.

The present invention relates to the technical field of ceramic roller processing, and provides a device for grinding and superfinishing the rolling surface of a ceramic roller, comprising a support housing, a drive module, a grinding module, and an abrasive circulation module. The grinding module, which is fixed by the support housing, comprises an inner grinding mechanism, an outer grinding ring, and a support collection tank. The inner grinding mechanism comprises a base, a linear drive assembly, multiple inner grinding ring subassemblies, a rotating shaft, and a top cover. The outer grinding ring is coaxially fixedly arranged on the outside of the multiple inner grinding ring subassemblies, and the support collection tank is coaxially fixedly arranged on the outside of the rotating shaft below the multiple inner grinding ring subassemblies and the outer grinding ring. The drive module is fixedly arranged at the bottom of the housing, and can be used to drive the inner grinding mechanism to rotate in a circular motion. One end of the abrasive circulation module is arranged above the grinding module, and the other end of the abrasive circulation module is connected to the support collection tank of the grinding module. The present invention can improve the processing accuracy and processing efficiency of the rolling surface of a ceramic roller.

A device for batch superfinishing of bearing inner ring raceway, comprising a rack with two rollers, a plurality of bearing inner rings are divided into a plurality of groups of clamps by a plurality of bearing positioning assemblies, a plurality of oilstone clamping shafts are arranged on the rack, and a plurality of oilstones are respectively connected to the oilstone clamping shafts, so that the plurality of oilstones can process the raceways of the plurality of groups of bearing inner rings when the two rollers drive all the bearing inner rings to rotate synchronously; the bearing positioning assembly comprises a spiral spring, two side plates, two retaining rings and two clamping plates, the plurality of bearing inner rings in the same group are sleeved on the spiral spring, the two side plates and the two retaining rings are sleeved on the spiral spring, the retaining ring is pressed on the end face of the bearing inner ring, and the two clamping plates are penetrated in the spiral structure of the spiral spring, so that the two clamping plates are pressed on the two side plates by the elastic force of the spiral spring, thereby clamping the plurality of bearing inner rings in the same group in the axial direction; one end of the spiral spring in the axial direction is provided with a pull hook for manually stretching the spiral spring.

The present invention relates to a device (100) for performing a superfinishing operation on threads of a ball screw.The apparatus comprises at least one holder (42, 52); a first interchangeable finishing tool (10) configured with a threaded portion on an operative inner concave portion (10A); a second interchangeable finishing tool (15) configured with a threaded portion on an operative inner concave portion (15A); a slotted, film-backed abrasive belt (20) configured to be continuously fed within the inner concave portions (10A, 15A) to form an interface between the finishing tools (10, 15) and the threads (40A) of the ball screw (40); and at least one drive means (44a, 44b) configured to angularly translate the holder to facilitate linear translation of the finishing tools (10, 15) relative to the ball screw (40).Advantageously, the device (100) supports the dead weight of the ball screw during machining and thus avoids bulging of the ball screw.

The utility model discloses a turbine blade superfinishing device which comprises a supporting base, an adjusting device is jointly installed on the left portion and the right portion of the upper end of the supporting base, a supporting frame is installed at the upper end of the adjusting device, a first hydraulic cylinder is installed at the left end of the supporting frame, and a sliding groove is formed in the upper end of the supporting frame. A machining device is installed in the sliding groove, and a rotating clamping device is installed in the middle of the upper end of the supporting base. According to the device, the first hydraulic cylinder can drive the machining head to be adjusted left and right, the second hydraulic cylinder can drive the machining head to be adjusted up and down, and therefore the device can adjust the machining position and the machining depth of a workpiece, and the practicability of the device is improved; and the driving gear can drive the driven gear to rotate, so that the device can comprehensively machine the whole turbine blade, the turbine blade does not need to be taken down and reinstalled, and the machining efficiency of the device is improved.

The invention relates to the technical field of bearing machining, in particular to a four-point contact superfinishing machine ball bearing manufacturing technology which comprises a positioning mechanism, a receiving device is rotationally installed at the bottom end in the positioning mechanism, a transmission device is fixedly installed on the right side in the positioning mechanism, and the positioning mechanism comprises a feeding device and a driving part. The feeding device is fixedly mounted in the driving part and comprises a feeding cavity, a first photoelectric sensor, a contact disc, a plugging plate, a second photoelectric sensor, a contact block, a displacement transverse plate, a first spring, extension rods and an electromagnetic chuck, and the extension rods are symmetrically and fixedly mounted at the bottom of the front end of the feeding cavity; the second photoelectric sensor is fixedly installed at the end, away from the feeding cavity, of the extension rod, the displacement transverse plate is slidably connected to the extension rod in a sleeving mode, and the first springs are symmetrically and fixedly installed between the displacement transverse plate and the feeding cavity. According to the four-point contact type superfinishing machine, the positioning mechanism is arranged, so that the aims of performing alignment type accurate feeding and synchronous material receiving when the four-point contact type superfinishing machine is used are fulfilled.

The application provides an independent drive type high-frequency reciprocating motion module superfinishing grinding wheel, relates to the technical field of grinding machines, and the grinding assembly comprises a grinding wheel mounting support, the grinding wheel mounting support is transversely rotatably installed on the top of a sliding mounting frame, a grinding wheel supporting rotating rod is transversely rotatably installed at the front end of the grinding wheel mounting support, a grinding wheel supporting wheel is fixedly installed at the center of the grinding wheel supporting rotating rod, a grinding wheel is fixedly installed on the outer ring of the grinding wheel supporting wheel, and lateral grinding wheels are fixedly installed on the two sides of the grinding wheel. The driving gear ring and the driving turntable are used for magnetically controlling the grinding wheel, so that the abrasion of transmission parts in the transmission process can be avoided. The electromagnet on the emergency stop sliding rod and the strong magnet in the cylindrical groove at the front end of the emergency stop sliding rod are magnetically matched, the grinding wheel can be quickly controlled to stop, the movement of the grinding wheel is quickly stopped, and the damage of excessive impact force to equipment parts is avoided.

The invention discloses a grinding process for a silent ball bearing of a micro household appliance, which comprises a bearing inner ring and bearing outer ring grinding process, and the bearing inner ring grinding process sequentially comprises the steps of end face grinding, flange grinding, flange superfinishing, inner diameter grinding, liquid polishing, channel grinding, two times of channel superfinishing and cleaning oil soaking. Demagnetization cleaning is carried out between the working procedures; according to the bearing outer ring grinding machining technology, machining is carried out according to the sequence of end face grinding, outer diameter grinding, outer diameter superfinishing, channel grinding, two times of channel superfinishing, liquid polishing machining and cleaning oil soaking in sequence, and demagnetization cleaning is carried out between the core procedures. The problem that the ultra-silence requirement of a household appliance bearing is difficult to meet due to the fact that the machining precision of a bearing ring is insufficient and the cleanliness of the whole production process is not controlled in place in a traditional micro household appliance ball bearing grinding technology is solved.