428 results about "Cylindrical grinding" patented technology

The utility model relates to the technical field of cylindrical grinding machines, in particular to a cylindrical grinding machine with a grinding wheel easy to replace, which comprises a machine body, a workbench and a headstock, the workbench is arranged at the upper end of the machine body, the headstock is slidably connected to the upper end of the workbench, a tailstock is slidably connected to the upper end of the workbench, and a grinding wheel grinding mechanism is arranged at the upper end of the workbench. The grinding wheel polishing mechanism comprises a driving mechanism, a differential machine is fixedly connected to the outer side of the driving mechanism, a driving housing is fixedly connected to the outer side of the differential machine, a grinding wheel fixing device is fixedly connected to the outer side of the driving housing, the grinding wheel fixing device comprises a grinding wheel housing, and a driving shaft mechanism is rotationally connected to the inner side of the grinding wheel housing and comprises a main shaft. According to the cylindrical grinding machine, due to the unique structural design of the cylindrical grinding machine, an efficient, safe and easy-to-operate grinding wheel replacement solution is provided for a user, the maintenance and replacement time is greatly shortened, the labor intensity is greatly reduced, and the production efficiency is improved.

The utility model discloses a high-precision cylindrical grinder for a lead frame. The high-precision cylindrical grinder comprises a lathe bed, and a power device, a grinding wheel assembly, a diamond grinding wheel repairing cutter, a cooling assembly, an air pump, a negative pressure pump, a dust removal box, a main shaft and a driven shaft which are arranged in the lathe bed. In the grinding wheel trimming process, compressed air generated by the air pump enters the air blowing cavity along the pipeline and the air pipe connector and then enters the blowing groove through the communicating groove, airflow is blown out after the flow speed is increased through the closing opening in the tail end of the blowing groove, and a complete annular air curtain is formed on the outer wall of a part located between the chuck and the ejector pin; high-speed moving sand particles generated during grinding wheel repairing can be effectively prevented from falling on the surface of a part, the product machining quality is improved, and then smooth production of a lead frame is guaranteed.

The invention discloses a method for predicting the remaining service life of a cylindrical grinding wheel based on acoustic emission signals, which comprises the following steps of: acquiring acoustic emission signal data in the working process of the cylindrical grinding wheel, labeling the acoustic emission signal data according to the number of effective processing parts, and forming a data set by the acoustic emission signal data and labels; constructing an initial model which comprises a data preprocessing module, a multi-scale feature extraction module, a feature fusion module and a prediction module; training the initial model by using the data set to obtain a prediction model for predicting the residual service life of the cylindrical grinding wheel; and inputting acoustic emission signal data during working of the cylindrical grinding wheel into the prediction model so as to output the residual service life of the corresponding cylindrical grinding wheel. The invention further provides a device for predicting the remaining service life of the cylindrical grinding wheel. The method provided by the invention can predict the residual service life of the cylindrical grinding wheel so as to guide production and maintenance, reduce the rejection rate and improve the resource utilization rate.

The invention discloses a vertical internal and external circular grinding machine and a grinding method thereof, and relates to the technical field of grinding machine equipment.The vertical internal and external circular grinding machine comprises a workbench and a disc rotationally connected to the top of the workbench, a supporting frame is fixedly connected to the top of the workbench, and first connecting frames are fixedly connected to the two sides of the supporting frame; a first grinding roller is rotationally connected to the inner side of the first connecting frame, a first driving motor is installed on one side of the first connecting frame, and the output end of the first driving motor is connected with the first grinding roller; and the fixing seats are fixedly connected to the top of the disc, and the number of the fixing seats is four. By arranging the switching assistor, the circular ring workpiece can be clamped through switching of the four pressing blocks in the process that the rotating ring drives the circular ring workpiece to rotate circumferentially, the top of the circular ring workpiece cannot be shielded all the time, and therefore the device can continuously conduct grinding operation, and the grinding efficiency is improved.

The utility model discloses an automobile windscreen wiper output shaft detection mechanism which comprises a positioning plate, a first positioning disc is fixedly installed on one side of the top end of the positioning plate, a second positioning disc is fixedly installed on the top end of the first positioning disc, and a fixing lining is fixedly installed in the positioning plate. According to the automobile windscreen wiper output shaft detection mechanism of the utility model, the parts are circular parts, only the cylindrical grinding is needed to match the clearance, the flat grinding is needed to match the sliding surface to ensure the luminosity and the sliding flexibility, the grinding by a bench worker is not needed during the final assembly, the whole processing technology is very simple, the production efficiency is high, and the cost is low. The cost is low; a closed ring is formed between the positioning discs, lubricating oil can be added without flowing out, rustiness between parts is avoided, and smooth sliding is guaranteed; the detection mechanism is high in applicability and low in cost, is used in a production field, and has a great reference value in the aspect of detection and popularization of output shafts of other front and back scraping products.

The invention relates to the technical field of water pump mandrel grinding, and particularly discloses a water pump rotor mandrel outer circle grinding device which is characterized in that a clamping component is fixedly connected to the top of a workbench, a transmission component is fixedly connected to the side face of the workbench, and a cooling component is fixedly connected to the side, away from the transmission component, of the workbench; the grinding component is installed on the transmission component and comprises a fixing shell, the bottom of the fixing shell is connected with the output end of the transmission component, fixing frames are fixedly connected to the two sides of the fixing shell, and grinding wheels are rotationally connected to the inner sides of the fixing frames. According to the outer circle grinding machining device for the water pump rotor mandrel, the connecting mechanism is arranged, due to the fact that the side face of the grinding wheel is finished synchronously in the process that the grinding wheel grinds the mandrel, extra shutdown is not needed for grinding wheel finishing operation, time is saved, the overall machining efficiency is improved, the idle time of equipment is shortened, and production benefits are increased.

The invention belongs to the technical field of cylindrical grinding machine control, and provides a self-adaptive control method and system for a cylindrical grinding machine jacking tailstock. The method comprises the steps that the cone adjusting track of a jacking tailstock is determined based on the geometric structure of a to-be-ground area of a target workpiece, the posture of the jacking tailstock and the posture of a grinding wheel, and a first jacking force sequence set is determined based on the cone adjusting track, the material attribute of the target workpiece and the machining process constraint condition; grinding thermal deformation information corresponding to all track points of the cone adjusting track is obtained through prediction, jacking force correction is conducted on the first jacking force sequence set based on the grinding thermal deformation information, and a second jacking force sequence set is obtained; and in the automatic cone adjusting process, the tailstock is adjusted and controlled according to the cone adjusting track and the second jacking force data set. According to the invention, non-stop automatic cone adjustment and self-adaptive jacking force control of the tailstock in the grinding process are realized, the machining consistency and the automation level can be effectively improved, the service life of equipment can be effectively prolonged, and the device is particularly suitable for machining parts with complex taper structures and high precision requirements.

The utility model relates to a full-automatic floating chuck suitable for a locomotive axle and an end face cylindrical grinding machine. The floating chuck adopts a rotary oil cylinder of a hollow structure and is provided with a plurality of piston rods, the piston rods are distributed at equal intervals, a hollow rotating disc is arranged on the front side of the oil cylinder, the front end of each piston rod is flexibly connected with the rotating disc, a plurality of eccentric grooves are formed in the inner circle face of the rotating disc, and balls and thrust springs located on the circumferential rear sides of the balls are arranged in the eccentric grooves. The depth of the groove bottom of the eccentric groove located in the moving range of the balls is gradually reduced from back to front. A grinding machine headstock and a grinding machine tailstock of the grinding machine adopt the floating chuck and are provided with live centers. The floating chuck can effectively avoid hindering feeding and discharging of a mechanical arm, effectively avoid hindering grinding of the end face of a workpiece, effectively avoid hindering jumping of the center of the workpiece and effectively avoid scratching the surface of the workpiece, and is better suitable for machining of the outer circle of the end face of the workpiece such as a locomotive axle.

The invention belongs to the technical field of cylindrical grinding machine equipment, particularly relates to a numerical control high-speed cylindrical grinding machine for workpiece machining, and aims at solving the problem that the whole cylindrical grinding efficiency is affected due to the fact that the contact position of a grinding assembly in the prior art is not movable. A workpiece clamping fixing frame and a workpiece clamping sliding frame are arranged at the two ends of the top of the grinding machine fixing base respectively, the workpiece clamping fixing frame and the grinding machine fixing base are fixed through bolts, and the workpiece clamping sliding frame and the grinding machine fixing base are installed in a sliding mode. Grinding moving blocks on the two sides drive driving gears to move in a sliding groove in a grinding ring frame through a driving motor, the outer circle surface of a workpiece is wrapped with a grinding belt for grinding, when the grinding belt descends, an electric push rod contracts, a tensioning wheel ascends, the stored grinding belt is released, and the workpiece is ground. The grinding belt can adjust the contact area with the outer circle grinding position of the workpiece, the grinding effect is improved, and the outer circle grinding efficiency is also improved through the rotating state of the grinding belt.

The invention relates to a numerical control inner and outer circle composite grinding machine which comprises a rack and an outer circle grinding mechanism, the outer circle grinding mechanism comprises an outer circle grinding spindle box and a grinding disc, the outer circle grinding spindle box moves on the rack, the grinding disc rotates on the outer circle grinding spindle box, and the numerical control inner and outer circle composite grinding machine further comprises an inner circle grinding mechanism. The inner circle grinding mechanism comprises two inner circle grinding heads, two inner circle grinding spindle boxes and a driving structure, the two inner circle grinding spindle boxes slide on the rack respectively, abutting seats are rotatably arranged on the opposite sides of the two inner circle grinding spindle boxes respectively, sliding seats are slidably arranged in the two inner circle grinding spindle boxes respectively, rotating shafts are rotatably arranged on the two sliding seats respectively, and the driving structure drives the two inner circle grinding spindle boxes to rotate. The two inner circle grinding heads are coaxially installed at the opposite ends of the two rotating shafts correspondingly, and the driving mechanism is used for driving the sliding base to slide and driving the rotating shafts to rotate around the axes of the rotating shafts correspondingly. And by additionally arranging the internal grinding mechanism, the equipment has the external grinding function and the internal grinding function at the same time, workpieces do not need to be transferred among different equipment, the machining efficiency is greatly improved, and simultaneous grinding of the inner wall and the outer wall of the cylindrical part is facilitated.

The invention discloses a continuous crushing treatment system and method for fiber waste, and relates to the technical field of carbon fiber recovery. The equipment comprises a conical cylinder, a conical grinding shaft sleeve, a conical gap, a cylindrical grinding section, an adjustable pressure head and a control system, convex ribs are arranged on the inner surface of the conical cylinder, a spiral groove is formed in the outer surface of the conical grinding shaft sleeve, and the conical cylinder and the conical grinding shaft sleeve form the gradually-shrinking conical gap; the self-grinding is realized by utilizing the high-strength characteristic of the carbon fibers; the cylindrical grinding section prolongs the high-pressure grinding time, and a pressure head can be adjusted to control the powder fineness; the dust problem is solved through the full-process closed design, the smashing efficiency is remarkably improved, equipment abrasion is reduced, high-purity and particle-size-controllable carbon fiber powder can be produced, and the device is suitable for various recycling scenes.

The utility model relates to a three-jaw flexible floating chuck and a small workpiece cylindrical grinding machine. An oil cylinder of the three-jaw flexible floating chuck is a multi-rod hollow oil cylinder, piston rods are distributed at equal intervals, sliding rails are connected with the front ends of the piston rods corresponding to the sliding rails and are in axial sliding connection with the profiling templates corresponding to the sliding rails, inclined grooves serving as sliding plate guide grooves are formed in the sliding rails, and L-shaped guide grooves are formed in the inner walls, located on the outer sides of the sliding plate guide grooves, of the profiling templates. The outer side face of each sliding plate is provided with a profiling guide structure extending into the corresponding L-shaped guide groove, the profiling guide structures on the outer side faces of the sliding plates are in guide fit with the corresponding L-shaped guide grooves of the sliding plates respectively, and the clamping seats are located on the radial inner sides of the mounting plates on the corresponding sliding plates respectively and connected with the mounting plates. Live centers and the floating chucks are arranged on a headstock and a tailstock of the small workpiece cylindrical grinding machine, and the live centers penetrate through the hollow parts of the floating chucks. The small-sized workpiece cylindrical grinding operation requirement of the numerical control grinding machine can be better met.

The utility model discloses a cylindrical grinding machine with a grinding wheel easy to replace. The cylindrical grinding machine comprises the grinding wheel, a fixing module, a rotating module, a first position adjusting module, a controller, a supporting frame, a second position adjusting module and a grinding wheel driving module. The grinding wheel driving module comprises a first vertical plate, one side of the first vertical plate is fixedly connected with a first motor, an output shaft of the first motor penetrates through the first vertical plate, and the end of the output shaft of the first motor is fixedly connected with a gear. A cylindrical workpiece needing to be ground is fixed through the three-jaw chuck, a grinding wheel is fixed through the fixing module, the cylindrical workpiece is moved to the position close to the grinding wheel through the first position adjusting module, the three-jaw chuck drives the cylindrical workpiece to rotate through the rotating module, and the grinding wheel is rotated through the grinding wheel driving module. And through the second position adjusting module, the grinding wheel moves along the cylindrical workpiece, and grinding of different positions of the cylindrical workpiece is achieved.

The invention provides a cylindrical grinding mill and method for lipstick production based on an energy-saving motor, belongs to the technical field of cylindrical grinding mills, and aims to solve the problems of raw material blockage, adhesion, nonuniform grinding and the like of a traditional grinding mill, the cylindrical grinding mill realizes dynamic grinding gap adjustment through cooperation of a crushing roller and a supporting roller which are coaxially arranged; the power mechanism drives the grinding roller to rotate through gear transmission, and meanwhile the reciprocating lead screw drives the supporting roller to move longitudinally to prevent material blocking. The knocking mechanism vibrates the grinding roller through periodic mechanical knocking, and raw material bonding is avoided; the pneumatic blowing system sprays air to the grinding area through a spraying pipe to assist discharging. The grinding mill is suitable for efficient and stable production of lipstick raw materials by remarkably improving the grinding uniformity and the discharging efficiency.

The invention discloses an outer circle grinding machining device for intelligent manufacturing of round mold accessories, and relates to the technical field of intelligent manufacturing of round mold accessories, the outer circle grinding machining device comprises an outer circle grinding assembly, the outer circle grinding assembly comprises a floating seat arranged at the bottom, guide sleeves are symmetrically fixed to the two sides of the floating seat, and an upper connecting piece is fixedly connected to the bottom of the front end of the floating seat; and an extension plate is fixedly mounted in the middle of the front end of the floating seat. According to the outer circle grinding machining device for intelligent manufacturing of the circular mold accessory, through linkage cooperation of the outer circle grinding assembly and the inner circle grinding assembly, synchronous grinding of an inner hole and an outer circle of the circular mold accessory can be achieved, and the concentricity is guaranteed; and the distance between the outer circle grinding wheel and the inner circle grinding wheel can be adaptively and dynamically adjusted according to the contour change of the explorator, so that the position of the grinding wheel does not need to be repeatedly adjusted through manual intervention when the grinding device treats the conical-section or circular-truncated-cone-shaped workpiece, the correction time is shortened, and the grinding precision of the variable-section workpiece is effectively improved.

The utility model discloses a high-precision adjustable cylindrical grinding machine which comprises an equipment working bottom box. A grinding mechanism is arranged on the equipment working bottom box, a fixing mechanism is arranged on the equipment working bottom box, a waste water collecting box is installed in the equipment working bottom box, a water outlet is formed in one side of the equipment working bottom box, and the grinding mechanism comprises a grinding moving plate; according to the polishing device, when the moving plate motor drives the moving plate lead screw to move, the first polishing machine box and the second polishing machine box can be driven to move on the moving plate lead screw, so that a workpiece is polished back and forth through the first polishing wheel and the second polishing wheel, and the precision of two polishing pieces of the first polishing wheel and the second polishing wheel is different; high-precision grinding can be conducted after one grinding wheel is subjected to coarse-precision grinding, when only one grinding wheel with one precision needs to be used, the first grinding machine box and the second grinding box are staggered by controlling the first push rod motor and the second push rod motor, and only one grinding wheel is used for grinding.

The invention discloses an automatic feeding and discharging device for cylindrical grinding of shaft workpieces and a control method of the automatic feeding and discharging device, and relates to the technical field of machining control, the automatic feeding and discharging device comprises a base, a feeding end and a control end are fixedly connected to the base, the feeding end is located on one side of the control end, and a sensor is arranged at the feeding end; a conveying belt is fixedly connected to the position over the base and located on one side of the feeding end, clamps are arranged on the two sides of the conveying belt and used for clamping workpieces, and a control module is arranged in the control end. According to the method, the three-dimensional contour and the edge data are located in the same spatial reference system, the two types of data are deeply associated through the feature matching algorithm, errors caused by data singleness in initial deviation calculation are corrected by means of complementation of the spatial information of the three-dimensional data and detail features of the edge data, the production efficiency is greatly improved, and the machining period is shortened.

The invention relates to the technical field of grinding machining, in particular to an eccentric grinding machining device. Comprising a machine tool body and a chuck on a left support of the machine tool body. The machine tool body is slidably connected with a right support located on the right side of the chuck along the rail. The chuck is used for clamping an eccentric part; a hole disc corresponding to the chuck is mounted on the left side of the right support; the upper surface of the right support is fixedly connected with a telescopic cylinder; the upper end of the telescopic cylinder is transversely and fixedly connected with a grinding rod; the grinding rod extends leftwards; the grinding rod is sleeved with a grinding frame; the grinding blocks abut against the upper outer wall of the eccentric part through gravity, so that under the condition that the eccentric part rotates by any angle, the grinding force of the grinding blocks on the outer circles of the eccentric part is consistent, and under the condition that the multiple outer circles of the eccentric part are ground by the multiple grinding blocks at the same time, the grinding efficiency of the eccentric part is improved. And the grinding uniformity of the outer circle of the eccentric part can be kept.

The utility model belongs to the field of cylindrical grinding and tensioning mandrel devices, and particularly relates to a cylindrical grinding and tensioning mandrel device which comprises a grinding mandrel body, a movable groove is formed in the grinding mandrel body, and a loosening and tensioning positioning shaft is connected into the movable groove in a sliding mode. When a nut workpiece body is clamped, the nut workpiece body is arranged outside the core grinding shaft body in a sleeving mode, then the locking nut is rotated, the loosening and expanding positioning shaft cannot rotate through threaded fit between the locking nut and the loosening and expanding positioning shaft, and the locking nut cannot move horizontally, so that the loosening and expanding positioning shaft can be driven to move horizontally; in this way, the movable steel ball is matched with the inclined face of the loose positioning shaft, the movable steel ball can move in the radial direction, the inner hole of the nut workpiece body is opened, the effect of locking the nut workpiece body is achieved, meanwhile, the clamping and dismantling time is shortened, the concentricity of the inner hole and the outer circle of the nut workpiece body can be accurately guaranteed, and the machining precision of products is controlled. And the clamping efficiency is improved.

The invention relates to the technical field of machining equipment, in particular to numerical control cylindrical grinding equipment which comprises a regular rectangular table horizontally arranged in the X direction, a clamping device and a center device. The side face of the other end of the correcting rectangular table is connected with a side inclination adjusting display device, the center positioning connecting line between the tip device and the clamping device and the X direction of the central axis of the correcting rectangular table in the horizontal direction are coincident, and a radial grinding device which slides in the Y direction is arranged on one side between the tip device and the clamping device. By adjusting the side inclination adjusting display device, the correcting rectangular table and the clamping device can be driven to synchronously rotate by taking the rotating shaft of the concentric connecting piece as the center, so that the inclination of the central axis of the correcting rectangular table relative to the grinding surface of the grinding device is adjusted. The cylindrical grinding taper can be accurately adjusted, and the cylindrical grinding taper adjusting device has the advantages of being reasonable in structural design, high in grinding precision, high in adjustability and the like.

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 provides a grinding device for metal accessory machining, and relates to the field of grinding devices.The grinding device comprises a grinding workbench and a clamping orientation mechanism, a material guiding pipe is fixedly connected to the front side of the upper end face of the grinding workbench, and two horizontal fixing plates are fixedly connected to the upper portion of the left end face of the grinding workbench; the number of the clamping orientation mechanisms is two, the clamping orientation mechanism on the left side is installed on the upper portions of the two horizontal fixing plates, and the clamping orientation mechanism on the right side is installed on the upper end face of the grinding workbench. Through the arrangement of the clamping orientation mechanism, by means of the friction limiting effect of rubber rolling wheels, a material guiding pipe and a pipe fitting in a material guiding barrel can only move in the left-right direction and cannot rotate in the circumferential direction, and therefore the grinding effect is improved; the problem that in the grinding process of an outer circle grinding device of the automobile part disclosed by an existing patent, a pipe fitting passing through the inner wall of a grinding stone is easily driven by the rotating grinding stone to rotate together, and therefore the grinding effect is weakened is solved.

The invention discloses a separating type cylindrical grinding machine special for an undercarriage, and belongs to the technical field of undercarriage machining. The moving platform is mounted on the surface of the machine tool main body; the clamping disc is installed at one end of the machine tool body and used for clamping and fixing the undercarriage, and the interior of the clamping disc is aligned with a feeding hole in one end of the machine tool body; and the correction mechanism is located at the other end of the machine tool body and used for positioning the center of the tail of the undercarriage. The machine tool has the beneficial effects that when the machine tool is used, the undercarriage is fixed through the clamping disc, when the outer wall of a pipe body of the undercarriage is bent, the pipe body of the undercarriage rotates and extrudes the ejector pin downwards at the same time, then the distance between the top of the ejector pin and the infrared distance sensor changes, and then the infrared distance sensor feeds back a signal to a control terminal; therefore, whether the surface of the undercarriage pipe body is deformed or not can be detected in time, and an operator is reminded to correct the undercarriage in time.

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 application discloses a clamping tool for inner and outer circular grinding machine, and relates to the technical field of inner and outer circular grinding machines, which comprises a bottom plate, a rotating mechanism arranged on the bottom plate, adjusting mechanisms connected to the two sides of the rotating mechanism, an adapter connected to the ends of the two adjusting mechanisms away from the rotating mechanism, a moving disc connected to the adapter, and a lifting mechanism connected to the end of the moving disc away from the adapter. The inner and outer circular grinding machine is placed on the placing plate, telescopic rod II is adjusted, and is moved up and down in sleeve I. The limiting blocks on the two sides of telescopic rod II limit telescopic rod II. After telescopic rod II is moved to a suitable position, the handle is pushed, the inserting rod is pushed into the inserting hole I on telescopic rod II, the height is adjusted, and the inner and outer circular grinding machine on the placing plate is clamped.

The present invention discloses a vertical internal and external circular grinding machine and a grinding method thereof, which relates to the technical field of grinding machine equipment and includes: a workbench and a disc rotatably connected to the top of the workbench. A support frame is fixedly connected to the top of the workbench. First connecting frames are fixedly connected to both sides of the support frame. A first grinding roller is rotatably connected to the inner side of the first connecting frame. A first driving motor is installed on one side of the first connecting frame, and the output end of the first driving motor is connected to the first grinding roller; a fixed seat, the fixed seat is fixedly connected to the top of the disc, and there are four fixed seats. By setting a switching auxiliary device, during the process of the rotating ring driving the circular ring workpiece to perform circumferential rotation, the circular ring workpiece can be clamped by four pressing blocks, so that the top of the circular ring workpiece will never be blocked, thereby enabling the device to continuously perform grinding operations and improving the grinding efficiency.

This invention discloses a centerless cylindrical grinding machine device for valve guides, belonging to the field of valve guide grinding. The device is used for infeed grinding of valve guides and includes a machine table, an adjusting frame and a grinding head holder respectively disposed on both sides of the machine table, and a workpiece support frame disposed between the adjusting frame and the grinding head holder and fixedly mounted above the machine table. This invention achieves axial elastic limiting of the valve guide through a clamping assembly and a reversing assembly, and, in conjunction with radial support from the workpiece support frame, effectively suppresses grinding movement and wobble of slender workpieces, improving grinding stability, coaxiality, and dimensional accuracy. After processing, it can automatically switch to a clamping and transfer mode for automatic unloading, achieving a high degree of automation. Simultaneously, cutting fluid can be directionally introduced into the inner hole of the valve guide and overflowed from a high position, forming internal convection heat transfer and significantly improving the cooling effect. After grinding, by flipping the drain hole, residual fluid in the inner hole is quickly drained by gravity, further stabilizing machining accuracy.

The utility model provides an automatic centering clamping mechanism for ring gauge outer circle grinding machining, and belongs to the technical field of ring gauge clamping, the automatic centering clamping mechanism comprises a bearing plate, a set of movable openings are evenly formed in the bearing plate, sliding seats are connected in the movable openings in a sliding mode, the top ends of the sliding seats are detachably connected with clamping blocks through hexagon socket screws, and the clamping blocks are connected with the bearing plate in a sliding mode. A support is fixedly connected to the lower end face of the bearing plate, a first screw rod is rotationally connected into the support, the top end of the first screw rod is rotationally connected with the bearing plate through a bearing, and a movable seat is in threaded connection with the first screw rod. According to the utility model, through the arrangement of the bearing plate, the sliding seat, the clamping block, the first screw rod, the moving seat, the connecting rod and the rotating mechanism, the ring gauges with different sizes can be clamped and fixed in a self-centering manner, the application range is widened, the clamping stability and accuracy can be improved, and the problem that the ring gauges with different sizes are inconvenient to clamp in the prior art is solved.

The utility model discloses a double-station vertical cylindrical grinding machine which comprises a machine body and a stand column vertically arranged on the machine body. A vertical grinding wheel assembly is arranged in the middle of the machine body, two sides of the grinding wheel assembly are respectively provided with a group of feeding mechanisms, each feeding mechanism comprises an X-axis carriage and a Z-axis carriage which are vertically arranged, the X-axis carriages are slidably mounted on the stand columns through horizontal guide rail mechanisms, and first linear driving mechanisms are arranged between the X-axis carriages and the stand columns; the Z-axis carriage is slidably mounted on the X-axis carriage through a vertical guide rail mechanism, and a second linear driving mechanism is arranged between the Z-axis carriage and the X-axis carriage; a headstock assembly and a tailstock assembly which are used for clamping a workpiece are vertically arranged on the Z-axis carriage in a manner of facing each other; a grinding wheel capable of rotating horizontally is arranged at the upper end of the grinding wheel assembly, and the two sides of the grinding wheel protrude relative to the grinding wheel assembly towards the corresponding feeding mechanisms. The grinding tool has the advantages of being reasonable in structural design, capable of improving machining efficiency, beneficial to improving grinding precision and the like.

This invention discloses a precision grinding device for the end face of an external cylindrical grinding machine. The invention relates to the field of machining technology and includes a main body shell. A clamping component is fixedly connected to the top of the outer surface of the main body shell. A fixed seat is slidably connected to the end of the top of the main body shell away from the clamping component. A grinding component is slidably connected to the middle of the top of the main body shell. This invention, by setting a dressing mechanism and adjusting a rotary knob, fixes the pin to the middle of the tube, preventing vibration during grinding. When the outer surface of the grinding block is uneven and needs to be dressed, the fixing pin is rotated to disengage from the fixing hole, thereby adjusting the height of the diamond grinding tool according to different thicknesses of the grinding wheel. Simultaneously, a brush is used to sweep away the waste chips generated during dressing.