59 results about "Cylindrical grinding" patented technology

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.

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 present invention is a cylindrical grinding apparatus including a first and second detecting means for detecting proximity between one end and another end of a crystal rod and a main shaft and a subordinate shaft in a non-contact manner and a drive mechanism that can adjust moving speed of a second support unit on the subordinate shaft, wherein, in support with contact between the one end of the crystal rod and the subordinate shaft, moving speed B of the second support unit in time from proximity detection between the one end and the subordinate shaft by the second detecting means to the support with contact is adjusted to be slower than moving speed A until the proximity detection; and in support with contact between the another end of the crystal rod and the main shaft, moving speed D in time from proximity detection between the another end and the main shaft by the first detecting means to the support with contact is adjusted to be slower than moving speed C until the proximity detection. This can provide a cylindrical grinding apparatus that can prevent occurrence of damage in an end portion of a crystal rod and mechanical misalignment of a support unit, reduce process time, and reduce necessity of maintenance of parts to detect positional relationships between the crystal rod and the main shaft etc.

1. Name of the product in this design: Front sliding door of CNC cylindrical grinding machine (MQ1350). 2. Purpose of this design: To serve as the housing for a CNC cylindrical grinding machine, providing safety protection. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model discloses a grinding wheel correction device for application in cylindrical grinding machine relates to cylindrical grinding machine technical field, including the body, the top fixedly connected with workstation of body, the workstation top fixedly connected with guide rail, the outer surface sliding connection of guide rail has headstock, the outer surface sliding connection of one end of guide rail away from headstock has tailstock, and the outer surface of one side close to headstock of tailstock is installed with correction mechanism. The utility model discloses through the pressure ring and the boss, fixes the grinding wheel disc between the cover shell and the baffle, and the positioning column can greatly reduce the time needed to center during installation, can also reduce eccentric situation, guarantees the machining accuracy, and the extrusion elastic ring, the buffer ring and the cushion block can all produce deformation when installing the grinding wheel disc, to reduce the gap on each structure connection, and the key groove on the transmission shaft can prevent the grinding wheel disc from slipping when rotating, so that the surface precision of workpiece is affected.

This invention relates to the field of rubber product processing equipment technology, and more specifically, to a rubber manufacturing cylindrical grinding machine that facilitates waste collection. The machine includes a main body with a protective cleaning structure and a dust removal structure. The protective cleaning structure includes a protective cover and a clamping structure. A mounting plate is provided on the main body, and the protective cover is installed on one side of the mounting plate via bolts. The protective cover has a wall cleaning structure, and the main body has a collection box that slides within the machine via the clamping structure. This invention physically surrounds the grinding area with a detachable protective cover, effectively preventing disorderly debris splashing, protecting the health of operators, and preventing debris from intruding into the precision parts of the machine tool. Its inner wall cleaning structure facilitates maintenance and ensures long-term effective protection. Simultaneously, large debris particles are guided to the sliding collection box below, achieving primary sorting and convenient cleaning of waste.

The application relates to a clamp for part external grinding. The clamp for part external grinding comprises a left top block, a transition sleeve, a right top block and a pull rod, the transition sleeve is provided with a guide centering hole for realizing centering of a part to be machined, one end of the guide centering hole is provided with the left top block, and the other end is provided with the right top block, and the left top block and the right top block are connected through the pull rod to realize clamping and fixing of the part to be machined. The application solves the problem that the main piston in the existing oil pump assembly cannot be directly machined in the two-end grinding process.

This utility model provides a collet-operated CNC grinding machine for external cylindrical grinding, which solves the problems of low production efficiency and low machining quality and precision of existing collet-operated CNC grinding machines. It includes a worktable; a feed slide is provided on the surface of the worktable, and the feed slide is slidably connected to the worktable surface; the feed slide includes a base and a material plate perpendicularly connected to the base; a clamping mechanism is provided on the base; a loading mechanism and a conveying mechanism located near the discharge end of the loading mechanism are provided on the material plate, and the conveying mechanism transports the collets from the loading mechanism to the clamping mechanism; a grinding mechanism is fixed to the worktable surface on one side of the clamping mechanism, and a unloading conveying mechanism is provided on the base on the other side. The clamping mechanism and the grinding mechanism cooperate to machine the external diameter of the collets. This utility model is widely used in the field of collet-operated CNC grinding machine technology.

The present application relates to a kind of large specification 86CrMoV7 steel kind embossing roller processing technology, roller body processing method: roller body quenching and tempering piece-frame position-rough boring inner hole-half precision turning-outer circle grinding-magnetic exploration-double frequency quenching+tempering-precision turning frame position-precision boring inner hole-precision turning and shaft head hot mounting;Shaft head processing method: shaft head quenching and tempering piece-precision turning and roller body hot mounting.Processing method is adopted after roller body hollow double frequency quenching and then hot mounting, selects reasonable process parameter, solves the precision control problem of fit length and total length, avoids the quality problems such as quenching crack, deformation, uneven hardness easily appeared in hollow double frequency quenching process, effectively guarantees product quality, satisfies user demand.

This utility model discloses a grinding device for pharmaceutical processing. The device includes a hollow cylindrical grinding box with openings at the top and bottom, a cover plate at the top, and a screen at the bottom opening. A grinding roller is longitudinally rotatable at the bottom of the cover plate. The grinding roller includes a rotating shaft, a conical guide block, a trapezoidal first grinding zone, and a cylindrical second grinding zone. A feed pipe is provided on the side wall of the grinding box. A motor is located at the top of the cover plate to drive the grinding roller to rotate. The inner wall of the grinding box and the outer surface of the grinding zone are provided with a frosted layer, with the roughness gradually decreasing from top to bottom. A vibration motor is provided on the outer wall of the grinding box to disperse the ground pharmaceuticals and prevent them from sticking together. This device improves grinding efficiency and pharmaceutical quality through step-by-step grinding and vibration dispersion. The cover plate and screen are detachable for easy cleaning.

This invention discloses a method for preparing small-sized tensile test specimens, comprising: ① sampling; ② pre-processing of the billet, clamping the aligned billet on a lathe fixture and turning it into a billet with a diameter of Ф8-12mm; ③ CNC program setting; ④ CNC machining, processing the round bar billet through rough turning, finish turning, chamfering, and cutting to finally produce small-sized tensile test specimens as shown below; ⑤ Grinding, further grinding the CNC-machined small-sized tensile test specimens using an external cylindrical grinder, with the final finished product size being Ф6±0.02mm. The purpose of this invention is to provide a method for preparing small-sized tensile test specimens to meet the requirements of European customers for testing the tensile properties of rails. This invention is characterized by its simple operation and ease of promotion.

This invention relates to the field of cylindrical grinding machine technology, specifically to a high-quality cylindrical grinding machine, comprising a machine body. The machine body has a mounting groove at its bottom, and an adjustment assembly and a drive assembly are mounted on the inner wall of the mounting groove. One side of the drive assembly and one side of the adjustment assembly are fixedly connected. Both the adjustment assembly and the drive assembly are concealed inside the machine body, not protruding from the bottom surface, thus not damaging the grinding machine's reference and not affecting the cylindrical grinding accuracy. This high-quality cylindrical grinding machine utilizes the cooperation between pulleys and a moving column. When the pulleys push the moving column to displacement, the moving column pushes a swing plate to swing. The swing of the swing plate pushes a horizontal plate, causing a roller to move longitudinally and contact the ground. At this point, the roller supports the device, thereby easily moving the machine body to a new position without relying on large forklifts or cranes for extended operations, reducing the manpower and time costs of machine body handling.

The utility model discloses a cylindrical grinding machine main shaft, including the axle body, the shell, the inner cover, the outer cover, the air curtain hole, the drain hole, the axle body is coaxially loaded in the shell, the both ends of shell are covered with the inner cover, the outer cover is stacked with the inner cover outside, be provided with first water retaining ring on the axle body, the inner cover is provided with the integrative second water retaining ring, the second water retaining ring installs in the port inner wall of shell, first water retaining ring, second water retaining ring mutually cooperate and form the zigzag water retaining joint, the inner cover is provided with the air curtain hole in the outer end port of water retaining joint, the outer cover is cooperated in the axle body outer peripheral surface and forms the water inlet joint. Through above -mentioned mode, the utility model provides a cylindrical grinding machine main shaft, forms the quick drainage channel through the air curtain hole and the drain hole, and realizes directional control and arranges simultaneously with air seal groove and guide angle, and the bearing distribution structure is optimized to the grinding wheel load simultaneously, thereby significantly improved the waterproof sealing performance and running stability of main shaft whole.

This utility model discloses a clamping mechanism for an external cylindrical grinding machine, including a base plate with a bracket fixedly installed at the bottom. When the external cylindrical grinding machine is in use, the workpiece needs to be clamped. The base plate, bracket, and limiting ring are installed on the grinding machine. At this time, the workpiece is placed on the side of the turntable away from the cylinder. The cylinder is started, which pushes the push plate away from the turntable. Since the end of the connecting plate is hinged to the slider and the push plate respectively, under its restriction, the push plate pulls the slider through the connecting plate, causing the slider to slide inside the slide groove. The six moving plates move in a converging motion. The moving plates drive the screw and the clamping block to move, so that the converging clamping block clamps the outer wall of the workpiece. When the outer wall of the workpiece is irregularly shaped, the screw is rotated. Since the screw is threaded inside the moving plate and the clamping block is rotatably connected to the end of the screw, under its restriction, the screw pushes the clamping block. The six independently moving clamping blocks can adjust the clamping according to the shape of the workpiece.

The application discloses a universal cylindrical grinding machine convenient to use and a method, and relates to the technical field of cylindrical grinding machines. The universal cylindrical grinding machine is provided with a first dynamic balance assembly and a second dynamic balance assembly in a grinding wheel mechanism. When the grinding wheel body rotates at a high speed, centrifugal sliding blocks of the first centrifugal balance driving assembly and the second centrifugal balance driving assembly overcome the pre-tightening spring force and slide along the box body under the action of centrifugal force, drive blocks are pushed to slide along the adjustable outer ring inclined groove through driving rods and transmission rods, and the adjustable outer ring is driven to make a circumferential fine adjustment along the fixed inner ring. The process is automatically completed relying on the centrifugal force, manual operation and shutdown are not needed, synchronous grinding and balancing are realized, dynamic unbalance caused by grinding wheel wear and cooling liquid adhesion can be effectively offset, vibration and runout can be avoided, grinding accuracy can be ensured, and the service life of the grinding wheel is prolonged. Compared with the manual balancing mode of the traditional grinding machine shutdown, the system greatly reduces the balancing time, avoids production interruption, is suitable for batch continuous grinding, ensures consistent balancing accuracy, and reduces workpiece scrapping.

This utility model discloses a grinding wheel dresser, comprising: a connecting mechanism, a rotating base, a telescopic mechanism, a diamond pen, and a reference block. The connecting mechanism is used to connect to an external cylindrical grinding machine. The rotating base is connected to the connecting mechanism with an adjustable rotation angle. The telescopic mechanism has a mounting base connected to the rotating base and a telescopic end. The distance between the telescopic end and the rotating base is adjustable. The diamond pen is mounted on the telescopic end. The reference block is connected to the rotating base with an adjustable rotation angle. The reference block has a reference surface and several rotation angles. When the reference surface is in the reference position, each rotation angle causes the diamond pen to correspond to a chamfering angle of the grinding wheel. This grinding wheel dresser can dress the outer circumferential surface, end face, and chamfered surface of the grinding wheel, significantly improving the dressing accuracy of the grinding wheel chamfered surface.

This invention discloses a CNC cylindrical grinding machine, belonging to the field of grinding machine technology. The equipment includes a grinding machine body, an external grinding assembly, an internal grinding assembly, an active measuring assembly, a shielding assembly, and an air-blowing assembly. The active measuring assembly is equipped with a retractable measuring probe, and both the shielding assembly and the air-blowing assembly are located at the measuring probe. This invention utilizes the linear displacement of the active measuring assembly feeding towards the workpiece as the primary power source, which is converted into rotational torque via a gear and rack system. This forces the normally closed shielding assembly to automatically rotate and avoid contact with the workpiece, exposing the measuring probe. Simultaneously, this avoidance rotation mechanically pushes the air-blowing assembly, synchronously activating the high-pressure air path to instantly blow away the liquid film and grinding sludge from the contact point surface before the probe contacts the workpiece. This invention achieves automatic probe protection and air-blowing cleaning, solving the problem of measurement distortion caused by cutting fluid and impurities, and effectively improving the reliability and machining accuracy of online measurement under grinding conditions.

This utility model relates to the field of grinding machine technology and discloses an auxiliary centering device for an external cylindrical grinding machine. It includes a machine housing, with a grinding table inside the housing. A first mounting block is fixedly connected to one side of the outer surface of the housing, and a mounting buckle is fixedly connected to the first mounting block. A laser pointer is installed inside the mounting buckle. A second mounting block is fixedly connected to the other side of the outer surface of the housing, and a calibration center is fixedly connected to the top of the second mounting block. A ring is fixedly fixed to the outer surface of the housing, and a cutting frame is fixedly connected to the top of the ring. An electric slide rail is fixedly installed on the inner top wall of the cutting frame. This utility model has the following advantages and effects: the operator places the workpiece on top of the grinding table and illuminates the area of ​​the workpiece to be ground with the laser pointer, thereby enabling centering and calibration of the workpiece's grinding position, improving the grinding accuracy during the grinding process.

The application discloses a high-efficiency grinding device for bearings, which comprises a lifting group, a movable end of the lifting group being connected with a grinding group, the lifting group driving the grinding group to vertically lift, the grinding group comprising a driving assembly and a bearing wheel, the bearing wheel being arranged at an output end of the driving assembly, and the bearing wheel being composed of an outer circle grinding piece and an inner hole grinding piece; the workpiece rotating disc in the application can simultaneously load multiple bearing workpieces, realizes batch continuous machining, and compared with a traditional single-piece machining mode, the multiple-station rotating machining mode is adopted, multiple bearings can be simultaneously machined, and the production efficiency is more than three times higher than that of the traditional single-piece machining; the outer circle grinding piece and the inner hole grinding piece are coaxially arranged, the outer circle and the inner hole of the bearing are simultaneously machined, the coaxiality of the inner and outer rings is ensured, the secondary clamping error in traditional separate machining is eliminated, the machining precision of the coaxiality is improved, and the high-precision bearing manufacturing requirement is met.

This utility model discloses a sliding track for a cylindrical grinding machine, relating to the field of cylindrical grinding machines. It includes a main support rod with a horizontally formed top horizontal groove on its top surface. A movable top plate is horizontally connected to the top surface of the main support rod, and mounting screw holes are evenly distributed on the top surface of the movable top plate. End fixing blocks are horizontally and symmetrically welded to both ends of the main support rod, and fixing screw holes are formed on the sides of the end fixing blocks. An end motor is fixedly installed at one end of the main support rod. A telescopic side rod is connected to one side of the end fixing block, and side fixing strips are symmetrically fixed to both sides of the telescopic side rod. Fixing connecting holes are evenly distributed on the sides of the side fixing strips. A transmission screw is horizontally inserted into the inner side of the top horizontal groove. Side mounting grooves are symmetrically formed at both ends of the main support rod. The modular structure makes installation and use more convenient, and the multi-directional adjustment structure meets the needs of grinding machine processing.

The utility model provides a kind of cock valve sealing arc piece eccentric outer circle grinding clamp, specifically includes main spindle, positioning key, eccentric seat, centering seat;The main spindle is provided with two groups of symmetrical grooves along middle axis;The eccentric seat is installed in the outer side surface of main spindle along the direction perpendicular to groove;The centering seat is installed in the outer side surface of eccentric seat;The positioning key is used to install the centering seat, eccentric seat in the outer side surface of main spindle;Wherein the vertical direction of positioning key, eccentric seat and centering seat installation is about the axis of main spindle axial symmetry installation structure.The clamp is simple to manufacture, the main body spindle material adopts carburizing quenching, improves service life;The processing mode of clamp carrier eccentric seat and adjusting pad block is simplified, so as to manufacture.

The utility model relates to a kind of adaptive steady clamping tool for external grinding, and it relates to machining technical field;Two-way screw rod is rotated and connected in mounting plate by bearing, two ends of two-way screw rod are respectively rotated and connected with the slider of two sides by thread, and the middle end of two-way screw rod is connected with adjusting motor by worm and gear pair, and adjusting motor is embedded and fixed in mounting plate;Rotary disc is respectively rotated and connected and embedded in the fixed plate of two sides by bearing, and one of fixed plate is embedded and fixed with rotary motor;Rotary gear is set and fixed on the output shaft of rotary motor, and rotary gear is meshed with the gear on adjacent rotary disc;Clamping mechanism is respectively arranged on the rotary disc of two sides, and clamping mechanism is connected with fixed plate;Realize workpiece automatic centering clamping and accurate rotation, improve grinding accuracy and clamping efficiency, adapt to different diameter workpiece processing demand.

A finely adjustable hydraulic valve core outer cylindrical grinding and stabilizing clamping fixture is disclosed. This utility model relates to the field of valve core processing technology. A rotating rod is rotatably mounted in a base via a bearing. A rotating disk is fixedly sleeved on the rotating rod. Three arc-shaped guide grooves on the rotating disk each contain a guide block, which is fixedly connected to a slider. A worm gear is fixedly sleeved on the rotating rod below the rotating disk. A worm gear meshing with the worm gear is rotatably inserted into the base via a bearing. An adjustment handle is fixedly mounted on the front end of the worm gear after passing through the base. A lifting block is located above the first clamping block, and a second clamping block is mounted on the lifting block. A height adjustment mechanism connected to the lifting block is provided on the base. This fixture not only allows for clamping the hydraulic valve core at two different heights, significantly shortening the suspension length of the valve core, but also allows the clamping height to be adjusted according to the length of the valve core to ensure clamping stability.

This utility model relates to the field of automatic feeding adjustment devices, and discloses an automatic feeding adjustment device for a centerless cylindrical grinder, including a main frame and slots. A slide rail is fixedly connected to the center of the inner bottom surface of the main frame, and a slider is slidably connected to the outer wall of the slide rail. Guide members are fixedly connected to both sides of the outer top surface of the slider, and cylinders are fixedly connected to both sides of the outer top surface of the slider near the center of the slider. Mounting plates are fixedly connected to the output ends of cylinders. In this utility model, the automatic feeding adjustment device for a centerless cylindrical grinder only requires manual placement of the workpiece to be processed into the slots on the movable block and the fixed block during the processing. The movable plate, cylinders, and other components cooperate to transport the workpiece to the ramp. After the previous workpiece is processed, the electric telescopic rod retracts, allowing the workpiece on the ramp to fall onto the worktable of the grinder for a new round of grinding, effectively avoiding the risk of work-related injuries that may be caused by manual feeding.