289 results about "Cylindrical grinding" patented technology

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 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 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 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 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 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 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.

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.

The invention discloses a cylindrical grinding high-precision compensation method based on an outer diameter measuring instrument, which comprises the following steps of: (a) establishing IO communication between the measuring instrument and a computer, and simultaneously establishing Modbus 485 communication between the measuring instrument and the computer; (b) feeding the grinding wheel to grind the workpiece, and outputting a first signal O1 by the measuring instrument when the grinding is carried out to a first stage P1; (c) the computer receives the first signal O1 and executes interruption, so that the grinding wheel stops feeding; (d) comparing the system coordinate parameters measured by the measuring instrument with the control instruction parameters of the computer to obtain a workpiece machining error value; the computer compares the current measured value of the measuring instrument during interruption with the value of the P1 in the first stage to obtain the overshoot caused by signal delay; and (e) repeating the steps (b) to (d). And therefore, the dimensional precision of the machined plummer block is further improved.

An Inconel 718 dodecagonal countersunk bolt upsetting technology is characterized by comprising the following steps that blanking is conducted, specifically, blanking is conducted through a lathe according to the actual use length and diameter of a bolt; core grinding is conducted, specifically, the outer circle of the blanked blank is ground; lubricating: the blank subjected to centerless grinding is lubricated by adopting copper plating; and upsetting is conducted, specifically, the lubricated blank piece is heated and put into an upsetting mold after reaching the set temperature, upsetting is conducted through a punching machine, the columnar blank piece is subjected to one-time upsetting forming, and the bolt polish rod is machined. According to the technology, one-time upsetting forming can be achieved, the defects caused by traditional multiple-time upsetting forming are overcome, the consistency of the part size and the product quality can be guaranteed, the production efficiency can be improved, the cost can be reduced, and the technology has very high practicability and is suitable for being vigorously popularized.

The invention discloses an optical mirror roller roundness detection device which is installed on a cylindrical grinding machine, and the cylindrical grinding machine comprises a grinding machine headstock, a control panel, a driving electric cylinder, a tailstock used for clamping a roller, a roller left-right movement driving motor and a grinding wheel feeding driving motor. The roundness detection device comprises a measurement execution mechanism, a detection analysis unit and a motion control unit. The measuring action is automatically completed by swinging the manipulator, and the detection analysis unit and the motion control unit are combined, so that the full-process automation from detection, analysis to compensation grinding is realized, the labor intensity and skill dependence of operators are remarkably reduced, and the processing period is shortened.

The invention belongs to the technical field of water pump rotor core shaft outer circle grinding, and particularly discloses a water pump rotor core shaft outer circle grinding machining device which comprises a base frame, a clamping, fixing and rotating mechanism, a feeding device and a self-compensation type renovating and grinding device. The clamping, fixing and rotating mechanism can quickly and accurately center and clamp the mandrel, and the grinding stability and precision are guaranteed; an automatic grinding process and collaborative operation are adopted, so that the production efficiency is greatly improved, and the labor cost is reduced; the self-compensation grinding piece can automatically trim a passivated grinding wheel and compensate the distance between the trimmed grinding wheel and the mandrel, grinding continuity is guaranteed, damage to the surface of a workpiece is effectively avoided, the fatigue strength of the mandrel is improved, the service life of the mandrel is prolonged, production cost is reduced, and quality and benefits are improved.

The utility model discloses a sapphire cylindrical grinding clamping device which comprises a base, two pushing mechanisms are symmetrically arranged at the two ends of the base, a rotating mechanism is correspondingly arranged at the moving end of one pushing mechanism, the two rotating mechanisms are coaxially arranged, a supporting frame is coaxially arranged on each rotating mechanism, and the supporting frame is arranged on the base. A clamping sleeve is installed on one supporting frame in a matched mode, an ejector pin is installed on the other supporting frame in a matched mode, and the clamping sleeve is matched with the ejector pin. According to the utility model, sapphire bars can be always positioned on the same axis, and the processing accuracy is improved.

This invention relates to the field of grinding wheel manufacturing technology, specifically disclosing a dustproof external cylindrical grinding device for grinding wheel manufacturing. The device includes a worktable, on the top of which are mounted a grinder and a support platform on the same plane. The support platform supports the grinding wheel to be processed. A dust filter is installed on the outer surface of the grinder to remove grinding debris generated during grinding. An anti-deviation device connected to the top of the worktable is located above the support platform. This invention utilizes the soft rubber sleeve of the anti-deviation device, which fits against the limiting component, and the equally spaced deformation grooves on its surface. When subjected to clamping force, the anti-deviation device expands uniformly outward, tightly fitting the inner wall of the grinding wheel's central hole. This effectively compensates for deviations caused by unevenness of the grinding wheel's end face, prevents tilting of the grinding wheel's rotation axis, and significantly reduces circumferential runout during external cylindrical grinding, ensuring the accuracy of initial roundness correction.

This utility model provides a headstock for an external cylindrical grinding machine, including a housing and a top cover, with cavities inside the housing and top cover. A second through hole and a first through hole are transversely arranged on the housing, penetrating the cavity. A headstock spindle, rotatably connected, passes through the second and first through holes, with the head of the headstock spindle positioned near the first through hole. A front bearing sleeve is installed in the first through hole, and a No. 1 bearing is installed between the front bearing sleeve and the headstock spindle. The headstock spindle is interference-fitted and fixedly installed in the inner ring of the No. 1 bearing. A rear bearing sleeve is installed in the second through hole, and a No. 2 bearing is installed between the rear bearing sleeve and the headstock spindle. The headstock spindle is interference-fitted and fixedly installed in the inner ring of the No. 2 bearing. This design can increase the axial force on small workpieces by several times, enabling the clamping and smooth rotation of large workpieces.

This utility model discloses an external cylindrical grinding device, including a base, a workpiece driving mechanism, and a grinding mechanism. The grinding mechanism includes a crank mechanism, a guide rail, and a grinding block. A slider is slidably mounted on the guide rail, and the slider is connected to the crank mechanism, which drives the slider to slide along the guide rail. A vertical groove is formed on the upper side of the slider, and the grinding block is slidably mounted in the groove. A spring is provided between the grinding block and the bottom of the groove. Under the action of the spring, the upper end of the grinding block can extend out of the groove to fit tightly against the surface of the workpiece to be ground. This utility model, by employing a grinding device with a certain degree of elasticity, can adapt to different types of shaft workpieces to be ground, has good versatility, and during secondary processing, the grinding block can always be tightly fitted against the surface of the workpiece under the action of the spring, avoiding the impact of workpiece jump during secondary clamping on the original shape and position accuracy.

This invention belongs to the field of magnetic separation technology, and in particular to a device for the coordinated mineralization and magnetic separation of iron in red mud. The lower inner side of the sand mill shell is provided with an arc-shaped concave cavity adapted to a cylindrical grinding rotor. The cylindrical grinding rotor is set in the arc-shaped concave cavity by rotation. Its outer cylindrical surface and the inner wall of the sand mill shell form a non-equidistant grinding chamber with left and right symmetry and a larger upper and smaller lower spacing. The minimum gap between the chambers is located in the bottom area of ​​the arc-shaped concave cavity. An overflow port is opened on the side wall of the sand mill shell in the downstream direction of the slurry flow path. A belt-type iron separator is used to magnetically separate the slurry discharged from the overflow port to remove iron. The slurry after magnetic separation is returned to the inside of the sand mill shell for circulation and re-grinding. The mixture after one grinding is subjected to preliminary magnetic separation to remove iron ore that can be magnetically adsorbed. Then the remaining mixture is circulated again. By diverting the iron-containing particles during the circulation process, it is ground to the target 1μm faster.

The invention relates to the technical field of static pressure grinding machines, and discloses a total static pressure cylindrical grinding machine which comprises a grinding machine body, a static pressure assembly, a circulating assembly and a grinding assembly. Wherein the grinding machine main body is used for supporting the device main body, the static pressure assembly is used for forming an oil film through hydraulic oil to support a rotating main shaft, the circulating assembly is used for circulating the hydraulic oil and cleaning oil stains, and the grinding assembly is used for driving a grinding tool to grind. The hydraulic oil forms a stable and uniform oil film, zero-contact and wear-free rotation of the rotating main shaft is realized, the size precision and the surface smoothness of a machined part are guaranteed, the service life of equipment is greatly prolonged, impurities and oil stains in the hydraulic oil can be efficiently intercepted through the movable filtering and online cleaning functions of the circulating assembly, and the service life of the equipment is prolonged. Equipment clamping stagnation caused by oil way blockage is avoided, the filter screen can be cleaned without disassembly, the shutdown maintenance time is shortened, and the production continuity and the equipment operation reliability are improved.

The invention discloses a machining technology of a precise deep hole part. The machining technology comprises the following steps that S10, blanking is conducted; s20, solid solution aging; s30, roughly turning an outer circle and chamfering; s40, a middle hole is drilled through a gun; s50, roughly turning the appearance; s60, stress relief aging is carried out; s70, roughly turning the outer circle; s80, the small end is subjected to semi-finish turning; s90, the large end is subjected to semi-finish turning; s100, honing an inner hole; s110, the outer circle is finely ground; and S120, the two ends are subjected to finish turning, and the precise deep hole part is obtained. Compared with the prior art, the technology has the following beneficial effects that 1, the technology is adopted for machining, and the requirement for the coaxiality of 0.02-0.03 of the outer circle of a deep hole in a drawing can be met after machining; 2, the coaxiality of the center hole and the outer circle after gun drill machining can be effectively rectified by adopting the expansion sleeve clamp to roughly turn the outer circle, the subsequent outer circle grinding allowance is reduced, and the machining efficiency is improved;

The application belongs to the technical field of cylindrical grinding machine equipment, and particularly relates to a numerical control high-speed cylindrical grinding machine for workpiece machining, which aims at the problem that the contact position of the polishing assembly in the prior art cannot be moved, thereby affecting the efficiency of the whole cylindrical polishing, and proposes the following scheme, which comprises a grinding machine fixing seat, the top of the grinding machine fixing seat is respectively provided with a workpiece clamping fixed frame and a workpiece clamping sliding frame at both ends, the workpiece clamping fixed frame is fixed through bolts between the grinding machine fixing seat, and the workpiece clamping sliding frame is slidingly installed between the grinding machine fixing seat. The polishing moving blocks at both sides are driven by the driving motor to move the driving gear in the sliding groove in the polishing ring frame, so that the polishing belt is wrapped around the outer cylindrical surface of the workpiece for polishing. When the polishing belt is lowered, the electric push rod is retracted, the tensioning wheel is lifted, the stored polishing belt is released, the area of the polishing belt in contact with the polishing position of the outer cylinder of the workpiece can be adjusted, the polishing effect is improved, and the state of the rotation of the polishing belt also improves the efficiency of the cylindrical polishing.

The invention belongs to the technical field of fine machining of slender shaft forgings, and discloses an adjustable device for controlling jumping of slender shaft forgings in the fine machining process, which comprises a cylindrical grinding machine, a long shaft is fixed at the top of the cylindrical grinding machine, and a grinding mechanism and a displacement device are arranged at the top of the cylindrical grinding machine. The displacement device is located on the side, close to the long shaft, of the grinding mechanism, a grinding wheel is installed on the grinding mechanism and used for grinding the long shaft, and in the grinding process, the grinding mechanism automatically pushes the grinding wheel forwards to compensate for abrasion of the grinding wheel; middle supporting force can be applied to the long shaft through cooperation of the grinding mechanism and the compensation mechanism, grinding force borne by the long shaft is offset, it is avoided that the long shaft is bent due to the grinding force, jumping caused by elastic deformation of a shaft body is remarkably reduced, machining precision such as roundness, straightness and surface roughness of the shaft body is guaranteed, and then the grinding quality is improved; meanwhile, eccentric wear of the polishing wheel is avoided, and the service life is longer.

This invention discloses a linear bearing bushing outer cylindrical grinding device and its working method. The linear bearing bushing outer cylindrical grinding device includes a frame. A grinding wheel is rotatably connected to the upper left side of the top plate of the frame, and a guide wheel is oscillatingly connected to the upper right side. A support plate is provided between the grinding wheel and the guide wheel at the upper end of the top plate of the frame. A clearance ring groove is provided on the outer circumference of the grinding wheel and the guide wheel. A clearance slot is provided at the upper end of the support plate. A stop block is provided at the rear side of the clearance slot at the upper end of the support plate. When the linear bearing bushing is placed on the upper end of the support plate and the rear end of the linear bearing bushing abuts against the stop block, the external thread on the outer side of the linear bearing bushing is in the clearance slot and the clearance ring groove. During the grinding of the linear bearing bushing, the rear end of the linear bearing bushing abuts against the stop block. This grinding device is not only simple in structure but also can efficiently grind the outer cylindrical diameter of the linear bearing bushing.

The invention relates to the field of machining, in particular to a thin-wall lining machining method which comprises the following steps that S1, a thin-wall lining blank is prepared, the total length and an inner hole of the thin-wall lining blank are roughly machined, a first intermediate product is obtained, and machining allowance is reserved; s2, the two end faces of the first intermediate product serve as positioning references, the outer circle of the first intermediate product is shaped, and a second intermediate product is obtained; s3, the second intermediate product is subjected to heat preservation for 4-6 h at the temperature of 200-300 DEG C, when the furnace is cooled to 100 DEG C or below, the second intermediate product is taken out of the furnace and air-cooled to the room temperature, and a third intermediate product is obtained; s4, the two end faces of the third intermediate product are subjected to flat grinding, and a fourth intermediate product is obtained; and S5, the outer circle of the fourth intermediate product is ground to the target size through an outer circle grinding machine, an inner hole of the fourth intermediate product is subjected to finish machining to the target size through a vertical machining center or a vertical numerical control milling machine, and the thin-wall lining is obtained. And the production requirements of large thin-wall linings can be directly met.