411results about How to "Improve grinding efficiency" patented technology

The invention discloses a segmented combined type worm grinding wheel based on spiral surface structuring and a laser finishing method, and belongs to the technical field of precise gear grinding. The working surface of the inner side of a spiral tooth groove of the worm grinding wheel at least comprises a section of structured area and a section of unstructured area in the axial direction; the structured area is provided with a crescent groove used for forming a grinding fluid storage and abrasive dust discharge channel in the grinding process. And the unstructured area keeps a continuous grinding surface and is used for finishing the surface of the machined workpiece in the structured area. According to the method, the laser processing head is controlled through multi-axis linkage to accurately describe an arc-shaped processing track in a spiral expansion coordinate system, the morphology consistency and the space precision of grooves are guaranteed, and the manufactured worm grinding wheel has good cooling, chip removal and accurate grinding performance and is suitable for high-efficiency and high-precision gear manufacturing.

The utility model relates to railway maintenance field especially relates to a railway track joint bolt rust cleaning equipment. The traditional rust cleaning mode, the staff is inefficient to the bolt polishing and is not convenient to polish the sleeper surface around the bolt when polishing the bolt. A kind of railway track joint bolt rust cleaning equipment, including sleeve;Two bolts are equipped on sleeper, the sleeve is located above one of the bolt, the middle part of the sleeve is hollowly arranged, motor is fixedly connected in the sleeve interior, transmission sleeve is fixedly connected on motor output shaft. Motor output shaft rotation drives transmission column rotation, transmission column rotation drives polishing cylinder rotation, the steel brush inside the polishing cylinder rotation is set and is polished to bolt, so as to realize the polishing of automatic bolt, and the polishing cylinder drives the polishing disc rotation and is polished to the sleeper surface around bolt, remove the rust of the sleeper surface close to bolt, and rust cleaning is more convenient and comprehensive.

The invention belongs to the field of wafer processing, and discloses a wafer grinding method based on an acoustic emission signal, which can avoid the quality defect of a ground wafer, and comprises the following steps: propping a predetermined wafer against a basic grinding surface, and grinding the predetermined wafer through the relative rotation of the basic grinding surface and the predetermined wafer. An acoustic emission signal of a predetermined wafer is obtained in real time, the abutting force on the predetermined wafer is adjusted based on the acoustic emission signal, the predetermined wafer is abutted through a grinding entity, an acoustic emission sensor is embedded in the grinding entity, and the grinding entity is composed of a plurality of grinding sub-entities corresponding to different radial directions of the predetermined wafer in a matched mode. The adjacent grinding sporocarp bodies can relatively move in the vertical direction, and therefore the multiple grinding sporocarp bodies correspondingly apply different abutting force in the radial direction of the preset wafer. The invention further discloses a wafer grinding device which is used for grinding the wafer grinding method in real time.

This utility model discloses a lithium-ion battery-powered multifunctional rail grinding machine, including a frame, and grinding components, a feed adjustment component, a contour wheel component, a handrail component, and a power battery pack component mounted on the frame. A pressure sensor monitors the grinding pressure in real time, and the feed adjustment component automatically adjusts the pressure between the grinding wheel and the rail to ensure the grinding pressure is always maintained at the optimal level. The feed method uses a motor-driven threaded transmission, which is simple, reliable, and offers high adjustment precision. The handrail component is reasonably designed, allowing for flexible adjustment of the grinding angle via an angle adjustment plate. Combined with the auxiliary wheel design, it can stably complete the grinding of the top, side, and curved surfaces of the rail. Powered by a lithium battery, it is convenient for field operations. This utility model has a reasonable structure, is easy to operate, and can improve the quality and efficiency of rail grinding.

The utility model discloses an engine surface strengthening treatment device which comprises a driving shaft rod, a grinding disc, a connecting shaft, a first grinding ring block, a second grinding ring block, an outer cover, a bearing seat, a connecting block, a guide hole, a guide rod, an n-shaped plate, a round hole, a connecting rod, a triangular block, an oil cylinder and a connecting piece. The multi-stage polishing device is reasonable in structural design, the first polishing ring block and the second polishing ring block are subjected to push-pull adjustment through the two sets of oil cylinders distributed from inside to outside, the polishing disc located in the middle is combined, the polishing precision of the polishing disc, the first polishing ring block and the second polishing ring block is gradually increased from inside to outside, and a multi-stage polishing structure can be formed; the telescopic state of the oil cylinder is adjusted through the operation window located in the outer cover, the grinding structure with the needed grinding precision can be adjusted to make contact with the corresponding surface of the engine cylinder body, the problem that the grinding structure is too tedious to disassemble, assemble and replace is solved, and the grinding efficiency is improved.

The present application relates to a kind of damping mechanism and grinding polishing machine tool, damping mechanism includes fixed seat, connecting disc and at least two piston cylinders, piston cylinder includes piston rod, fixed seat is used to connect, at least two piston cylinders are arranged in pairs on connecting disc, closed fluid circuit is arranged between each pair of piston cylinders, fixed seat is movably connected with connecting disc by piston cylinder, piston cylinder is arranged to damp the movement of fixed seat.Grounding, grinding disc will be lifted by the part of workpiece thickness, will produce floating and drive fixed seat floating in rotation process, piston cylinder is provided with throttle orifice at the connection of the side of fluid circuit away from fixed seat, due to the throttle effect of small hole, pressure difference can be generated on both sides of throttle orifice, and then pressure difference is generated between each pair of piston cylinders, so that the part of workpiece thickness bears larger pressure from grinding disc.Each two piston cylinders are arranged in pairs on connecting disc, and pressure is applied to each part of workpiece, so as to improve grinding efficiency.

The utility model provides grinding equipment. The grinding equipment comprises a connecting shaft, a mounting base, a first grinding assembly, a second grinding assembly, a third grinding assembly and a fourth grinding assembly. The connecting shaft is arranged on one side of the mounting base in the first direction. The first grinding assembly is arranged on one side of the mounting base in the second direction. The second grinding assembly is arranged on one side of the mounting base in the third direction, and the third direction, the first direction and the second direction are perpendicular to one another. The third polishing assembly is arranged on the side, away from the first polishing assembly, of the mounting base. The fourth grinding assembly is arranged on the side, away from the second grinding assembly, of the mounting base. Thus, the first polishing assembly, the second polishing assembly, the third polishing assembly and the fourth polishing assembly are arranged on the different side faces of the mounting base, different polishing assemblies can be replaced by rotating the connecting shaft to conduct different polishing procedures, operation is easy and convenient, and the polishing efficiency can be effectively improved.

The angle-adjustable fixing tool is characterized in that a cylinder and an upper stand column form a two-step cylinder, the diameter of the cylinder is smaller than that of the upper stand column, the cylinder is inserted into an inner hole of a lower stand column and is in clearance fit with the inner hole, and the lower end of the upper stand column is pressed at the upper end of the lower stand column; the lower supporting plate is fixed to the upper stand column, the bolt penetrates through a through hole formed in the lower supporting plate and a through hole formed in the upper supporting plate correspondingly, and the nut is arranged on the bolt in a screwed mode to fixedly connect the lower supporting plate with the upper supporting plate. The upper supporting plate is fixedly connected with the V-shaped iron; the drill bit is placed in a V-shaped groove of the V-shaped iron; the drill bit is pressed and fixed in the V-shaped groove by the pressing plate positioned above the V-shaped groove of the V-shaped iron; the round nut is welded at the tail end of the V-shaped iron; the tool bolt penetrates through the round nut in a screwed mode, and the tail end of the tool bolt makes contact with the tail end of the drill bit. The drill bit supporting block is fixed to the V-shaped iron, and the head of the drill bit supporting block is inserted into the spiral groove of the drill bit. The drill bit polishing and fixing tool is low in cost and high in universality.

The utility model discloses a novel basket type grinding machine, including by draw bar, main shaft, grinding basket and dispersion disc component grinding unit, and the utility model discloses innovative design is in by upper grinding disc, lower grinding disc, mesh board, basket gland, shaft sleeve, moving ring subassembly, static ring subassembly and the basket component grinding basket, the utility model discloses adopt novel material suction grinding structure, and the upper grinding disc rotates and participates in grinding work simultaneously, and material suction grinding is carried out simultaneously, and the grinding efficiency is greatly improved, and the direction of the upper oblique round hole of the upper grinding disc is opposite with the lower oblique round hole of lower grinding disc, when working, grinding beads are not easy to accumulate in the vicinity of grinding disc, reduce the probability of broken pearl, and material can carry out more sufficient grinding, and the design of double -deck grinding disc, reduce the self weight of material suction impeller and grinding disc, improve the working efficiency of motor, and the production efficiency is greatly improved.

The utility model discloses a kind of board ring sensor surface grinding with scrap collecting device, including support frame: the bottom of the support frame is provided with support table, the top of the support table is fixedly connected with stepped support plate by bolt, the top of the stepped support plate is rotatably connected with two slot plates, the left and right sides of the top of the stepped support plate are rotatably connected with driving plate, two The end opposite to the driving plate is rotatably connected with sliding block, the surface of the sliding block is slidably connected with the inner cavity of slot plate, the top of the left and right sides of the support table is fixedly connected with motor by bolt, the utility model is rotated by starting motor driving driving plate, in turn by sliding block driving slot plate reciprocating swing, to expand the collection range of dust cover to scrap, it can reach in polishing process, the scrap generated by polishing is collected, to avoid the purpose of adverse effect of scrap splashing on working environment.

The utility model relates to the technical field of T-shaped screw polishing, and discloses a polishing device for T-shaped screw production, which comprises a flow guide frame, a screw screening machine is fixedly mounted on one side of the flow guide frame, and a polishing component is mounted at the bottom of the other side of the flow guide frame. According to the technical scheme, the second motor is driven to drive the eccentric disc to rotate, the eccentric disc can drive the reciprocating rod to move up and down in a reciprocating mode, the piston barrel, the extrusion rod, the fixing ring and the spring are installed at the other end of the reciprocating rod, after the reciprocating rod moves downwards, the spring at the bottom of the piston barrel is extruded, and the pressed spring extrudes the extrusion rod; when the reciprocating rod moves upwards, the extrusion rod synchronously moves upwards along with the reciprocating rod and loosens the pressed screws, and a large number of screws continue to be transmitted on the flow guide frame. The screw transmission can be stopped, and the screws are ground for a long time by the plurality of groups of first grinding rollers and second grinding rollers, so that the screw grinding effect is greatly improved, and on the contrary, when the reciprocating rod moves upwards, the extrusion rod synchronously moves upwards along with the reciprocating rod and loosens the pressed screws, and a large number of screws continue to be transmitted on the flow guide frame.

This utility model discloses a valve ball grinding and positioning device with an anti-displacement structure, including a positioning frame. A back frame for mounting and fixing grinding tools is fixed on the back of the top of the positioning frame. Square columns are inserted into the top of both sides of the positioning frame. A reinforcing shaft is rotatably installed in each set of square columns. A fixing cone for inserting into the inner cavity of the valve ball is fixed at one end of the reinforcing shaft that is close to each other. An anti-displacement component is provided on the positioning frame to cooperate with the fixing cone and position the valve ball. By setting the anti-displacement component, this utility model can autonomously and multi-directionally position the valve ball on both sides and inside according to the size of the valve ball. At this time, the multi-directional and multi-means positioning method improves the positioning stability of the positioning device for the valve ball, effectively avoids the valve ball from easily shifting during the grinding process, and greatly improves the grinding effect of the grinding tool on the surface of the valve ball.

The utility model relates to the technical field of optical crystal blank processing, in particular to a grinding structure for optical crystal blank processing, which comprises a support frame arranged on a machine base, a grinding component for performing targeted adjustment grinding according to the position of an optical crystal blank is arranged on the support frame, and a mounting plate is arranged on the machine base. A placing seat is mounted on the mounting plate, a vacuum suction pipe is mounted on the placing seat, a vacuum chuck for adsorbing and fixing an optical crystal blank is mounted at the top of the vacuum suction pipe, and a rotating mechanism for driving the vacuum suction pipe to rotate is arranged on the vacuum suction pipe. According to the utility model, the crystal blank is firmly adsorbed on the vacuum chuck through the vacuum suction force generated by the vacuum pump, so that the influence on the optical performance of the crystal blank caused by the damage to the corners of the crystal blank due to side edge clamping is avoided, and the vacuum chuck is a rubber pad with a cambered surface structure at the top, has certain elasticity, and can be better attached to the cambered surface crystal blank; the friction force with a crystal blank is increased, so that the adsorption stability is improved.

The application provides a blade arc grinding process and belongs to the technical field of blade processing. The blade arc grinding process comprises the following steps: fixing the bottom of the blade through a lower fixing mechanism to facilitate the placement of the blade; fixing the upper part of the blade through an upper fixing mechanism to facilitate the grinding of the blade; installing the grinding wheel body through an installation mechanism to facilitate the replacement of the grinding wheel body; moving the grinding wheel body through a driving mechanism to facilitate the grinding of the blade by the grinding wheel body; and placing the blade in the fixed groove through the lower fixing mechanism, and the elasticity of the two return springs in each automatic clamping assembly enables the clamping block to automatically fix the bottom of the blade, so that the blade is placed more stably.

This invention discloses a beneficiation method for iron, boron, and uranium minerals in uranium-boron iron ore, which has the following characteristics: 1. The three-stage closed-circuit crushing product is laminated and pulverized using a high-pressure roller mill, so that the -5mm particle size content in the crushed product is greater than 70%. By utilizing the technology of multiple crushing and less grinding, the energy consumption of beneficiation can be reduced and the grinding efficiency can be improved; 2. Iron concentrate is obtained by staged grinding and staged magnetic separation. The tailings of iron beneficiation, such as the tailings of coarse magnetic separation, primary magnetic separation, and secondary magnetic separation, are subjected to stepwise gravity separation to obtain uranium concentrate and boron concentrate in stages, thereby improving the recovery rate of B2O3 and U in the boron and uranium concentrates and comprehensively utilizing iron, boron, and uranium resources; 3. The uranium minerals in the iron beneficiation tailings are separated by a combination of Nelson centrifugal concentrator, shaking table, and suspended cone concentrator, thereby improving the U recovery rate in the uranium concentrate. The Nelson centrifugal concentrator can be used for roughing of uranium minerals, the suspended cone concentrator can recover fine-grained uranium minerals, and the shaking table can recover relatively coarse-grained uranium minerals.

This utility model relates to the field of rice cake processing technology, specifically a rice flour grinding device for rice cake processing. It includes a main body with a horizontally convex outer shell. A grinding disc and a drive shaft are rotatably mounted inside the shell and connected to each other. A spiral feed conveyor is located on the side of the drive shaft. The grinding disc has a first grinding surface and a second grinding surface on its side near the drive shaft and its outer ring, respectively. A first grinding element and a second grinding element, which cooperate with the first and second grinding surfaces, are fixed inside the shell. A feeding hopper is also located on the side of the main body. This rice flour grinding device for rice cake processing vertically sets the grinding disc and provides grinding surfaces on one side and the outer ring, allowing for multiple grinding operations until the powder reaches the desired fineness. The grinding area also features an efficient heat dissipation structure, facilitating long-term operation of the rice flour grinding device.

The polishing device for bearing production comprises a workbench, a support is arranged at the bottom of the workbench, three guide holes are formed in the workbench, the three guide holes are evenly distributed in the workbench in a circular shape, and two supporting rollers are arranged between every two adjacent guide holes; through the arrangement of the inner supporting assembly, an inner hole of a bearing outer ring or inner ring can be supported, the bearing outer ring or inner ring can rotate along the inner supporting assembly, through the arrangement of the driving assembly, the inner supporting assembly can be matched to drive the bearing outer ring or inner ring to rotate, and therefore the grinding disc can conveniently grind and polish the two end faces of the bearing outer ring or inner ring; the grinding efficiency is improved, the position of the driving assembly can be adjusted, the grinding device is suitable for bearing outer rings or bearing inner rings of different sizes, the bearing outer rings or the bearing inner rings can be supported through the arrangement of the supporting rollers, and the end faces of the bearings are prevented from being scratched.

The utility model discloses a disc bamboo product side edge grinding device which comprises a base, a first support assembly, a second support assembly, a first driving assembly, a first edge grinding assembly, a second edge grinding assembly and a third edge grinding assembly. The first support assembly comprises a first support, the second support assembly comprises a second support, and the first support and the second support are arranged at intervals in the vertical direction to form a first area; the first edge grinding assembly comprises a first edge grinding cylinder, the second edge grinding assembly comprises a second edge grinding cylinder, and the third edge grinding assembly comprises a third edge grinding cylinder which are all arranged in the first area. The two ends of the first edge grinding cylinder, the two ends of the second edge grinding cylinder and the two ends of the third edge grinding cylinder are rotationally connected with the first support and the second support correspondingly. The first driving assembly is arranged on the base and comprises a third support and a first driving unit. The second edge grinding cylinder, the third edge grinding cylinder and the first edge grinding cylinder are distributed in the circumferential direction of the preset machining position at intervals. In general, the design is compact, operation and maintenance are easy, and the labor cost is reduced.

A kind of concentric positioning device of crystal bar rounding clamp, including crystal bar positioning device, rounding clamp positioning device;Crystal bar positioning device includes first inclined rod, second inclined rod, third inclined rod and fourth inclined rod;Rounding clamp positioning device includes two height adjusting devices, height adjusting device includes fixed end and lifting end, fixed end is provided with positioning hole.The present application first utilizes crystal bar positioning device, rounding clamp positioning device to carry out positioning, so that the axis of crystal bar and the axis of rounding clamp are located in the same vertical plane, then utilizes height adjusting device to adjust the height of rounding clamp, so that the axis of rounding clamp and the axis of crystal bar are located in the same horizontal plane, to realize rounding clamp and crystal bar concentric bonding, simple operation, improve the concentricity of rounding clamp and crystal bar, reduce the uneven impact of grinding wheel to crystal bar, solve the swing problem of crystal bar in the process of rolling outside circle, reduce the grinding allowance of crystal bar, improve grinding efficiency.

The utility model belongs to solid waste base cementitious material processing technical field, specifically disclose a kind of solid waste base cementitious material powder grinding device, including bottom plate, the bottom plate upper end one side is connected with first support plate, first support plate one side upper portion is connected with feed pipe, feed pipe one end is extended to first support plate one side, first support plate is opened with rolling mouth at the place corresponding feed pipe, feed pipe is located inside rotation of rolling mouth, the outer wall one side of feed pipe is connected with stabilizing plate, stabilizing plate one side is connected with outer tube, the utility model is structured design by double layer powder grinding, strong magnetic iron removal, convenient cleaning etc., realize that powder grinding efficiency and quality promotion, iron impurity efficient removal, maintenance convenient and cost reduction, and structure stable adaptability is strong.

The application discloses a kind of crop crushing grinding device, comprising: crushing grinding jar;Cover plate is clamped in the top of crushing grinding jar, the bottom of cover plate is fixedly connected with sealing ring;Multifunctional base structure is installed below crushing grinding jar, can be used to keep low temperature, shock absorption and assist fixing to the cover plate;Crushing anti-sticking wall structure is installed in the bottom of cover plate, the cover plate and crushing grinding jar can be fixed under the action of multifunctional base structure, in turn, the vibration generated in the process of crushing grinding jar can be absorbed and buffered under the action of arc rubber plate and sliding cylinder and fixed rod, in turn, the noise emitted after rootstock impacts inner wall is reduced, under the action of placing round frame, ice block can be placed to cool down, in turn, the inside of crushing grinding jar is in low temperature state.

The utility model relates to glaze grinding technical field provides a glaze grinding with ball mill, including ball mill main part, support and motor, the both ends of ball mill main part outside are provided with support, and the ball mill main part rotation is arranged between the support, and the end of rear end support is installed with motor, and the motor is connected with the rear end of ball mill main part, and the outside of ball mill main part is provided with the outer sleeve shell, and the top of outer sleeve shell inside is provided with cooling assembly, and the inside of ball mill main part is provided with ball mill cavity, and ball mill cavity is obliquely arranged in the inside of ball mill main part, the utility model discloses the oblique design of ball mill cavity, cooperation ball mill main part rotation, let the grinding ball and glaze reciprocating roll in ball mill cavity. In the rolling process, the frequent and powerful collision, friction of both, greatly improve the grinding efficiency of glaze, can fast glaze processing to the fine degree that meets the process requirement, satisfies the efficient production demand.

The utility model relates to polishing device technical field, and disclose a kind of polishing device for numerical control lathe shell surface processing, including platen one and platen two, platen one and platen two between being provided with rotating rod, the lower end between platen one and platen two is symmetrically installed with U-shaped frame, the inside of the front and rear ends of U-shaped frame is slidably installed with square bearing, the inside between square bearing is fixedly installed with driving wheel, sand belt is installed between driving wheel, the upper side of square bearing is uniformly provided with baffle on U-shaped frame, adjusting screw is penetrated and is screw-connected in the middle of baffle, the front and rear ends of platen one and platen two are fixedly installed with fixed plate in close to corner place, roller is rotatably installed on fixed plate in close to lower side place. The device can increase polishing area, reduce operating labor intensity, and the edge chamfering of numerical control lathe shell can be stably and uniformly polished.

The utility model discloses a vertical mill for mineral powder. The vertical mill comprises an equipment rack, the fine grinding frame is fixed on the surface of the equipment rack; the fine grinding arc-shaped screen is fixed on the inner wall of the fine grinding frame; the first grinding roller is rotationally connected to the interior of the fine grinding frame; the first fixing frame is fixed on the outer wall of the first grinding roller; and the fine grinding blocks are fixed to the outer wall of the first fixing frame, the multiple sets of fine grinding blocks are arranged in an annular array mode, multiple sets of arc-shaped grinding strips are fixed to the surface of the fine grinding arc-shaped screen, and grinding grooves matched with the arc-shaped grinding strips are formed in the surfaces of the fine grinding blocks. According to the vertical mill for the mineral powder, a two-stage grinding structure combining coarse grinding and fine grinding is adopted, so that the grinding efficiency and precision of the mineral powder are greatly improved, the granularity of a finished product of the mineral powder is more uniform, and higher production requirements are met.

The present application relates to a kind of grinding rotor, including top wall, and with top wall connection side wall, grinding rotor inside is opened with grinding inner cavity, the outer periphery of side wall is provided with multiple grinding bars, the cross-sectional area of grinding bar is along the decreasing trend of grinding rotor radial direction from inside to outside, at least part grinding bar is provided with first inclined plane in the face side along the direction of rotation of grinding rotor, first inclined plane is arranged with horizontal plane angle;Side wall is provided with several heterodirectional variable-diameter channels, each heterodirectional variable-diameter channel is gradually tapered from inside to outside, each heterodirectional variable-diameter channel includes top surface, first side, bottom surface and second side connected in sequence, top surface and bottom surface are arranged with angle between them. Through the design of grinding bar and heterodirectional variable-diameter channel and cooperate with separating wheel assembly, avoid forming grinding dead zone in grinding cavity, and effectively improve the grinding efficiency and grinding uniformity.The present application also relates to vertical nanometer sand mill with the grinding rotor.

The utility model provides double-station automatic flexible polishing equipment for aluminum alloy low-pressure castings, which belongs to the technical field of polishing equipment and comprises a worktable, a double-station polishing component and a fixing component. An X-axis linear module is installed on the surface of the workbench, and a fixing base is arranged on the surface of the X-axis linear module in a sliding mode. The mounting seats are mounted at the two ends of the mounting plate, the flexible floating main shaft is mounted on the surface of the mounting seat at one end, and when the flexible floating main shaft drives the first grinding wheel to rotate and the first grinding wheel is in contact with a workpiece, the flexible floating main shaft can automatically adjust the position and the angle of the first grinding wheel according to the actual shape of the surface of the workpiece; and a grinding motor on the surface of a mounting base at the other end rotates to drive a second grinding wheel to rotate to conduct primary grinding on the surface and the edge of the aluminum alloy low-pressure casting, obvious flashes are removed, a manual grinding mode can be replaced through arranged double-station grinding, and the grinding efficiency is improved.

This invention discloses an automatic grinding device for partitions, comprising a connecting structure, a lead screw, and a base. An installation structure is rotatably sleeved on the lower part of the connecting structure. Two installation beams are fixed to the upper part of the outer surface of the installation structure. A coarse adjustment structure is installed at the bottom end of each of the two installation beams. Two clamping cylinders are hinged to the middle of the outer surface of the base, and two clamping frames are hinged to the lower part of the outer surface of the base. The output ends of the two clamping cylinders are respectively hinged to the two clamping frames. A fine adjustment structure is installed at the ends of the two coarse adjustment structures that are far apart from each other, and a grinding structure is installed on each of the two fine adjustment structures. During the grinding of the partition, the grinding wheel moves along the partition while rotating, achieving continuous and automatic grinding of the partition, improving grinding efficiency. It can automatically adjust the pressure between the grinding wheel and the partition, avoiding excessive or insufficient pressure, thereby effectively ensuring grinding quality.

The utility model discloses a bolt grinding device, including turnover subassembly and grinding vibration screen subassembly, the grinding vibration screen subassembly is installed at turnover subassembly, and turnover subassembly is used for turning over grinding vibration screen subassembly, the grinding vibration screen subassembly includes grinding bucket, vibration module and two sets of grinding module, this bolt grinding device is through respectively putting into the bolt to two grinding screen buckets and putting into the abrasive of sufficient amount in the grinding bucket, then closes the end cover, starts turnover subassembly and turns the grinding bucket to the vertical state, makes the abrasive enter to the lower part of grinding bucket, starts the vibrator and can carry out the grinding to the bolt in the grinding screen bucket at the lower part of grinding bucket, starts turnover subassembly again after grinding, makes the grinding bucket turn over one hundred and eighty degrees, carries out the grinding to the bolt in its other end, and can take out the bolt that grinds completely, and this process is recycled, can carry out the grinding to the bolt in batches, effectively improves the grinding efficiency of bolt, reduces the possibility that bolt grinds damage.

The application discloses a rail polishing unit and a rail polishing trolley, and the rail polishing unit comprises a suspension assembly, a unit frame assembly, a motor mounting platform, a motor guide assembly, a polishing motor, a polishing grinding wheel, a lifting driving mechanism and a deflection driving mechanism. The suspension assembly is connected with a trolley frame, and the unit frame assembly is slidably connected with the suspension assembly. The motor mounting platform is hinged with the lower part of the unit frame assembly, and the motor guide assembly is connected with the motor mounting platform. The polishing motor is slidably connected with the motor guide assembly, and the polishing grinding wheel is connected with the output shaft of the polishing motor. The two ends of the lifting driving mechanism are respectively hinged with the polishing motor and the motor mounting platform. The two ends of the deflection driving mechanism are respectively hinged with the trolley frame and the motor mounting platform. The application can solve the technical problems of the existing rail polishing unit, such as large space occupation, large lifting resistance, low polishing efficiency and poor maintainability.