404 results about "Bench grinder" patented technology

The utility model provides a twist drill coping device with high efficiency and accurate positioning, and belongs to the field of alloy cutter coping machining. The problems that certain dangerousness exists in existing auger bit coping, the coping yield is uncontrollable, and the coping efficiency is difficult to improve are solved. The drilling machine comprises a platform, a grinding wheel mechanism, a walking mechanism and a drill bit clamping mechanism, the grinding wheel mechanism, the walking mechanism and the drill bit clamping mechanism are all arranged on the platform, the grinding wheel mechanism is arranged at one end of the walking mechanism, the drill bit clamping mechanism is arranged on the walking mechanism, and the walking mechanism comprises a lead screw, a linear guide rail, a sliding table and a circular truncated cone face. The grinding wheel mechanism comprises a grinding wheel mounting frame, a servo motor and a grinding wheel, and the drill bit clamping mechanism comprises a drill bit clamping tool and a clamping tool mounting seat. The auger bit grinding device is mainly used for grinding an auger bit.

The invention discloses an automobile gear grinding device and relates to the technical field of gear grinding, the automobile gear grinding device comprises a grinding workbench, a grinding machine and a rotating table, the grinding machine comprises a base fixedly connected to the upper surface of the grinding workbench and a grinding disc cutter sliding on the base of the grinding machine, and the rotating table comprises a fixed table fixedly connected to the upper surface of the grinding workbench. The driving machine is fixed to the side, away from the grinding machine, of the rotating table fixing table, and an adjusting assembly is arranged on the rotating table. By adjusting the clamping stroke of the clamping blocks, it can be guaranteed that the three clamping blocks can effectively abut against and clamp a workpiece after synchronous movement, the problem that the workpiece cannot be effectively contacted and clamped due to the fact that a single clamping block is excessively abraded is solved, and the clamping effect on the workpiece is further guaranteed; and the problem that the depths of ground tooth grooves are different when the workpiece is ground into a gear due to looseness when the workpiece is clamped is solved, and the precision of grinding the workpiece into the gear is improved.

The invention discloses a bridge bearing platform construction method which comprises the following steps: excavating a bearing platform pit foundation on the periphery of a pile foundation according to a design drawing and a field geological exploration condition, sequentially leveling a slope surface, inserting and driving soil nails and paving a reinforcing mesh, and then carrying out shotcreting and anchoring operation by adopting C20 shotcreting concrete; annularly cutting the designed elevation position of the pile head of the foundation pile by using a grinding machine; after the bearing platform reinforcement cage is manufactured into the bearing platform reinforcement cage, a cooling structure is installed on the bearing platform reinforcement cage; the manufactured bearing platform steel reinforcement framework is placed at the planned position in the bearing platform pit foundation, and then a pouring model corresponding to the bearing platform structure is installed according to the reference line; and the center main tower bearing platform, the auxiliary piers and the transition pier bearing platform are poured in a layered mode, and after the bearing platforms are maintained, the foundation pit needs to be backfilled with pit foundation excavation earthwork in time. The technical problem that the geological stability is poor when bearing platform construction is carried out on an inclined riverbed surface or a near abrupt slope can be solved, and the temperature in the bearing platform can be controlled.

The invention belongs to the technical field of machining, and particularly relates to a high-precision universal grinding wheel trimming mechanism, a fillet trimming method thereof and a base. The arc-shaped guide rail is fixedly installed on the base and provided with an arc-shaped guide groove, and an arc-shaped conical rack is fixed in the arc-shaped guide groove; the rotary sliding block is slidably mounted on the arc-shaped guide rail, and a position adjusting rod device and a cutter device are mounted on the rotary sliding block; all planes of a grinding wheel can be finished accurately, rapidly and safely, meanwhile, arc surfaces needed for machining of inner and outer circle grinding wheels can be finished, the arc surfaces of machined parts have high geometric precision and surface roughness, the size precision can reach 0.02 mm, the mechanism further has the function of adjusting the radius of the finished arc, and the machining efficiency is improved. Finishing of different arc radiuses can be met, and the machining precision and the machining range of common equipment are greatly improved.

The invention relates to the technical field of welding, in particular to a butt weld back-gouging-free welding process which comprises the steps that S1, blanking and forming of a steel plate are completed, double-face symmetrical grooves are formed in the butt joint weld positions of two to-be-welded plates correspondingly, and a truncated edge is arranged between the grooves in the two sides of the lower to-be-welded plate; s2, the to-be-welded areas of the two to-be-welded plates are ground and derusted through a grinding machine; s3, the two to-be-welded plates are assembled, positioned and welded; s4, preheating the welding seam area; s5, gas protection backing welding is conducted on the two sides of the weld joint at the same time in the same direction, and electric arcs in a fine drop transition or jet flow transition mode are adopted during welding; and S6, gas protection filling and cosmetic welding are conducted on the two sides of the weld joint at the same time in the same direction, and electric arcs in a pulse droplet transition mode are adopted during welding. Therefore, by means of the method, back gouging-free full penetration welding can be achieved, the method can adapt to gap change tolerance in a larger range, and the back gouging technology can be effectively popularized.

The invention discloses online grinding roller and grinding wheel repairing equipment, and relates to the technical field of grinding roller and grinding wheel repairing, the online grinding roller and grinding wheel repairing equipment comprises a lifting mechanism and a grinding wheel mechanism, the lifting mechanism comprises a device base, a grinding roller is rotatably mounted on the device base, the grinding roller is repaired through the grinding wheel mechanism, and a bottom plate is fixedly mounted on the device base; a lifting air cylinder is fixedly installed on the bottom plate, a lifting side plate is fixedly installed at the telescopic end of the lifting air cylinder, a rotating plate is rotatably installed on the lifting side plate, the grinding wheel mechanism comprises a grinding wheel sliding plate, the grinding wheel sliding plate is fixedly installed below the rotating plate, a third sliding block is slidably installed on the grinding wheel sliding plate, and an air cylinder frame is fixedly installed on the grinding wheel sliding plate. When different working problems of the grinding roller are solved, the working efficiency can be improved and the repairing cost can be reduced by adopting different repairing modes of grinding or coating repairing, and the online grinding roller repairing precision can be improved by adopting adjustable repairing equipment.

The invention relates to the related technical field of grinding machines, in particular to a structural defect positioning method and system for a pneumatic grinding machine, and the method comprises the steps: judging the structural applicability of the grinding machine by matching detection features, and obtaining and storing an initial detection result; monitoring the operation data, calculating a loss value, and identifying abnormal parts and the probability thereof by using an abnormal positioning model; and when the probability reaches the standard, comparing the current and initial images to identify abnormity, fusing abnormal information to position structural defects and feeding back, thereby solving the technical problem that the structural health state of the pneumatic grinding machine is difficult to accurately evaluate in a complex working environment, realizing real-time monitoring of key parameters such as temperature, vibration and pressure in the operation process of the grinding machine, and improving the accuracy of the operation of the grinding machine. And in combination with the use requirement of an application scene, full-period structure defect positioning analysis is carried out, so that the scene adaptability of structure defect positioning of the pneumatic grinding machine is improved, the defects existing in the structure are found in time and accurately positioned, and the technical effects of safe and efficient operation of the pneumatic grinding machine are ensured.

The utility model belongs to the technical field of grinding machines, and particularly relates to a water grinding machine which comprises a mounting frame, an upper mounting plate arranged on the mounting frame, a mounting box fixed on the upper mounting plate, a bidirectional motor mounted on the mounting box, a ceramic grinding wheel mounted on the bidirectional motor, a lower mounting plate mounted on the mounting frame, a water tank mounted on the mounting plate and a water pump mounted on the lower mounting plate. The water tank communicates with a first water conveying pipe and is provided with a shunt valve, the water pump communicates with a second water conveying pipe, the mounting box is provided with a water valve, the shunt valve communicates with a shunt pipe, the water valve communicates with a cooling pipe, the cooling pipe is provided with a sprinkler head, and the upper mounting plate is provided with a backflow assembly. By starting the water pump, cooling water in the water tank flows through the first water conveying pipe, the second water conveying pipe, the water distributing pipe and the cooling pipe, so that the cooling water can be sprayed out of the water spraying head, the temperature in the grinding process is effectively reduced, sintering of the ceramic grinding wheel due to friction overheating is prevented, the service life of the ceramic grinding wheel is prolonged, and dust is reduced; and the working environment is optimized.

The invention relates to the technical field of metallographic specimen preparation, in particular to a high-carbon stainless steel fine bar metallographic specimen preparation method and a specimen thereof. The preparation method comprises the following steps: S1, embedding a sample; s2, grinding to 1 / 2 diameter of the longitudinal sample by a grinding machine; s3, performing polishing treatment on the surface of the sample on a rotary polishing machine by using metallographic abrasive paper; s4, preparing a polishing solution; and S5, holding the sample treated in the steps S1 to S3 with a hand, using water as a lubricant, using flannelette as polishing cloth, and using the polishing solution in the S4 to polish on a polishing disc of a polishing machine for 1-3 minutes, the polishing rotating speed being 300-700 revolutions per minute, the moving radius of the sample being 100-120 mm, and the downward pressure being 0.2-0.5 kg. According to the preparation method of the high-carbon stainless steel fine bar metallographic specimen and the specimen thereof, the effect of the prepared specimen greatly reduces the formation of black spots, so that the microscopic observation effect of the metallographic specimen is improved, and the loss caused by metallographic misjudgment is reduced.

A double-face precision grinding machine comprises a machine frame (100), a grinding wheel mechanism (10), a feeding mechanism (20) and an electric adjusting mechanism (30) used for adjusting the feeding amount of the grinding wheel mechanism (10), the electric adjusting mechanism (30) comprises a guide rail (31), a first transmission mechanism (32) and a driving servo motor (33), and the driving servo motor (33) is connected with a mounting base (11) through the first transmission mechanism (32); the periphery of the feeding mechanism (20) is provided with a plurality of bins (22) used for containing workpieces to be machined and made of non-metallic materials. The precise grinding machine tool further comprises a control system (60) used for controlling all the parts to work. The cost of the precise grinding machine tool is greatly reduced compared with that of a numerical control machine tool, due to the fact that multiple technical measures are adopted, grinding of precise parts can be met, and the problem that machining precision is difficult to achieve through a traditional grinding machine is solved.

The utility model relates to a cable cutting device which comprises an angle grinder, a guide assembly, a clamping assembly, a cutter feeding assembly and a protective shell, the angle grinder comprises an electric angle grinder and a cutting blade, the electric angle grinder drives the cutting blade to rotate, the protective shell wraps the outer surface of the cutting blade, the clamping assembly and the cutter feeding assembly are installed on the protective shell, and the cutter feeding assembly is installed on the protective shell. The feed assembly moves along the guide assembly. According to the cable cutting device, the rechargeable lithium battery angle grinder is adopted as cutting power, the problem that a hydraulic cutting nipper and an electric grinding machine (floor type) depend on an alternating current power supply or an engine is solved, the cable cutting device is more suitable for outdoor or field construction environments, and the weight of a tool is greatly reduced.

The invention discloses a motor fault diagnosis method for a grinding wheel grinding robot, and belongs to the technical field of equipment detection, and the method comprises the following five key steps: firstly, collecting vibration signals at different speeds; secondly, constructing an abnormal energy ratio sequence; then calculating an initial fault value; further counting the energy abnormal frequency under each speed working condition; and finally, the initial fault value is compensated in combination with the abnormal frequency, and an accurate motor fault diagnosis value is finally obtained. According to the method, the vibration signals are collected under three different rotating speed conditions of high speed, medium speed and low speed, and more comprehensive and accurate motor fault evaluation is realized through energy ratio sequence construction and abnormal frequency statistics.

The utility model discloses a single-station high-speed grinding machine which comprises a base, a mounting plate is fixedly arranged at the top of the base, a rotating shaft is rotatably arranged in the mounting plate, a grinding wheel is arranged at one end of the rotating shaft, the other end of the rotating shaft is connected with a motor, and a protective cover is sleeved outside the grinding wheel. A purification box and a fan are installed at the top of the base, the output end of the fan is communicated with the purification box, the input end of the fan is connected with a bent pipe, a plurality of extension pipes are installed on the inner side of the bent pipe, and the extension pipes are fixed to the side wall of the protective cover in a penetrating mode. The utility model relates to the technical field of grinding machines, the grinding machine can introduce granular sweeps and flue gas into the purification box through the fan, the granular sweeps can be retained in a cavity on the right side of the purification box through filtration of a filter screen in the purification box, and gas with the flue gas can be purified through adsorption of activated carbon, so that the purification effect of the grinding machine is improved, and the service life of the grinding machine is prolonged. And the working environment of the grinding machine is ensured.

To provide a disc grinder cover which can change a direction of a protection cover relative to a disc grinder body.SOLUTION: A disc grinder cover 1 may be attached to a disc grinder 101 including: a tool body 10 which generates rotational power; a rotary shaft which transmits the power of the tool body 10; a pedestal part through which the rotary shaft is inserted and which is disposed at the tool body 10 side; and a disc-like disc 16 attached to the rotary shaft and having a grindstone. The disc grinder cover includes: a protection cover 30 which covers the disc 16 from the pedestal part side and is fixed to the pedestal part; and an angle fixing part which sets an angle position of the protection cover 30 and fixes the protection cover to the pedestal part. The angle fixing part has: a biasing plate 45 which is biased through elastic members in a direction from the protection cover 30 to the pedestal part; and engagement parts which engage with the biasing plate at the set angle position while causing the biasing plate to face the pedestal part.SELECTED DRAWING: Figure 3B

The utility model relates to the field of dust removal of grinding machines, in particular to a grinding machine with a dust removal function, which comprises a bottom plate, a mounting plate is fixedly arranged above the bottom plate through bolts, a fixedly connected base is arranged above the mounting plate, a switch is fixedly arranged on the other side of the base, and a stepping motor is fixedly arranged in the base through bolts. The stepping motor is turned on through the switch, the stepping motor drives the first bevel gear and the first belt pulley to rotate when being started, the first bevel gear drives the second bevel gear to rotate, and the second bevel gear drives the mounting shaft and the two grinding wheels at the two ends of the mounting shaft to rotate to grind an object when rotating; the first belt wheel drives the second belt wheel to rotate through the belt, so that the fan rotates synchronously, air containing dust enters the air filter box through the air outlet to be filtered, the device can use a single driving source to drive the double mechanisms to work at the same time, and energy consumption is reduced.

The utility model discloses a grinding machine arc light anti-sputtering device which comprises a base, a grinding wheel assembly installed on the top wall of the base, channel steel installed on the top wall of the base, a first baffle vertically inserted in a groove of the channel steel, a clamping rod installed in the groove of the channel steel, a clamping groove formed in the bottom end of the first baffle, and a second baffle installed in the clamping groove. The clamping rod is clamped in the clamping groove, a grinding opening is formed in the first baffle, and the first baffle is used for resisting arc light sprayed out when the grinding wheel assembly works. The grinding wheel assembly has the advantages that arc light or scraps generated by the grinding wheel assembly can be resisted in the maximum area through the first baffle and the second baffle, damage caused by the arc light or the scraps to operators is avoided, and safe production of the grinding wheel assembly is guaranteed.

The utility model relates to the technical field of grinding wheel machines, and discloses a grinding wheel machine of a quick grinding wheel replacing mechanism, which comprises a base, and a grinding wheel machine body is fixedly mounted on the top surface of the base. By arranging the disassembling mechanism, a first supporting ring, a first clamping ring and a second supporting ring are arranged for bolt installation, an internal grinding wheel disc is disassembled, then the interior of the grinding machine is cleaned, a grinding wheel is rapidly replaced, the time and energy needed by an operator for replacing the grinding wheel can be shortened, and the labor cost is reduced; a reloading mechanism is arranged, a second annular plate and a second supporting plate are mounted through a first U-shaped plate, and meanwhile, a second blade is mounted through threads, so that a grinding wheel can be quickly disassembled and reloaded, and the grinding machine can more flexibly adapt to different machining requirements; and therefore, the angle of the protection device can be conveniently adjusted, and sparks are prevented from splashing to harm the health of operators.

The utility model relates to an edge grinding auxiliary device for a twist drill. Comprising a grinding machine, a protective cover is arranged outside a grinding wheel of the grinding machine, an edge grinding device mounting unit is arranged on the protective cover, and an edge grinding unit matched with the grinding wheel is arranged at the top of the edge grinding device mounting unit; the cutter sharpening unit at least comprises a quick-change support, a self-aligning nut is arranged at the top of the quick-change support, a rotary stud is arranged in the self-aligning nut in a penetrating manner, a twist drill bushing is arranged on the end face of the outer side of the rotary stud, and the included angle between the rotary stud and the twist drill bushing is 90 degrees; an included angle between the center line of the aligning nut and the quick-change support is 31 degrees; the inner diameter of the twist drill sleeve is 0.1 mm larger than the outer diameter of the twist drill. And the up-and-down swinging rotation angle of the twist drill bushing is 20-30 degrees. The twist drill cutter sharpening device has the advantages of being simple in structure, reasonable in design and capable of reducing operation difficulty and improving working efficiency while guaranteeing the twist drill cutter sharpening progress.

The invention relates to the technical field of grinding equipment, in particular to brick surface grinding equipment which comprises a rack, a rotation driving assembly is arranged in the rack, the output end of the rotation driving assembly is connected with a grinding wheel, a limiting assembly is arranged on the top face of the rack, one end of the limiting assembly is located at the top of the grinding wheel, and the limiting assembly is used for limiting the three sides of a brick. And a pressing assembly is arranged on the top face of the rack, one end of the pressing assembly is located at the top of the brick, the pressing assembly is used for abutting against the top of the brick, and the brick can make stable contact with the surface of the grinding wheel during grinding.

1. Name of the designed product: polishing workbench (portable - element group) 2. Use of the designed product: workbench for polishing model part element group 3. Design points of the designed product: in shape 4. Picture or photo that best indicates the design points: combination of use state figure 1.

The utility model relates to an automatic sand dressing device of grinding machine, including the machine case and sand dressing mechanism, the bottom side of machine case installs the grinding wheel, and the grinding wheel rotates through the drive of driving device, sand dressing mechanism installs in the bottom other side of machine case, and the working end of sand dressing mechanism installs sand dressing subassembly, sand dressing subassembly is matched with the working grinding surface of grinding wheel, the inside of machine case is equipped with linear conveying installation cavity, and linear conveying device of linear transmission connection with sand dressing mechanism is installed in linear conveying installation cavity. This automatic sand dressing device can replace artificial to complete the dressing of grinding wheel, and the working efficiency is high, because sand dressing subassembly is matched with the working grinding surface of grinding wheel, and the dressing accuracy is also high, prolongs the service life of grinding wheel, avoids the secondary wear of artificial manual dressing.

The invention relates to the technical field of lens machining, in particular to a manual and pedal vertical double-grinding-wheel numerical control core taking machine which adopts a vertical double-grinding-wheel mechanism, one grinding wheel can be selected at will for machining, the double grinding wheels can be adopted for rough grinding and accurate grinding, and grinding can be conducted at the same time. The grinding wheel mechanism adopts a guide rail sliding block independent mechanism, is stable in precision and can be finely adjusted; the upper side lens shaft adopts the design concept of a guide rail sliding block, the grinding precision efficiency is improved through the design concept, the precision is greatly improved, the coaxiality can be finely adjusted, and abrasion is not prone to occurring. Moreover, a servo hollow motor, a lens main shaft and a servo motor are directly connected, a camera of an optical centering or laser centering instrument can directly irradiate the center of the lens to confirm whether core shift exists or not, and then manual adjustment and confirmation are carried out; when a large-diameter lens is manually loaded, the lens can be held by two hands, the upper lens shaft is lifted by stepping on the pedal plate, and the machine can be operated by one person.

The utility model discloses a hydraulic cantilever clamping type steel pipe outer circle polishing device which comprises a bearing table, a dust cover located at one end of the bearing table and a polishing assembly in the dust cover, and is characterized in that a plurality of pairs of supporting wheels are arranged on the bearing table in the length direction of a steel pipe and comprise the left supporting wheel and the right supporting wheel, the supporting wheel on one side is a driving wheel, and the supporting wheel on the other side is a driven wheel. The supporting wheel on the other side is a follower wheel, and an acute angle is formed between a wheel shaft of the follower wheel and the center line of the steel pipe. The polishing assembly comprises a hydraulic cylinder located above the center line of the steel pipe, the hydraulic cylinder is connected with two pairs of rotating arms symmetrically arranged above the two sides of the steel pipe through connecting rod assemblies, the upper ends of the rotating arms are hinged to the supporting frame in the dustproof cover, and grinding wheels are arranged at the lower ends of the rotating arms. The polishing device overcomes the phenomenon of piece explosion caused by self-vibration, bounce displacement and the like of the grinding machine in the finishing process, can finely adjust to the optimal polishing force in a mode of hydraulically clamping the two sides of the double-rotating-arm steel pipe and synchronously applying pressure, and is simple to operate, safe, environment-friendly and stable in operation.

The utility model relates to the technical field of cutter edging, in particular to cutter edging machining equipment which comprises a grinding machine body, grinding wheels, notch protective covers, a plurality of supporting plates and a protective assembly, the grinding machine body is provided with the two grinding wheels with different mesh numbers, the notch protective covers are arranged on the outer sides of the grinding wheels, and the supporting plates are arranged on the protective assembly. The supporting plates are connected to the two ends of the notch protective cover, the protective assembly is connected to the notch protective cover and comprises a limiting block, a cutting blade and an adjusting assembly, and the adjusting assembly comprises an adjusting rod, a moving block and a steering assembly. According to the polishing device, the limiting block is located on the polishing grinding wheel, articles accidentally drawn into the polishing grinding wheel are blocked through the limiting block, the articles are cut through the cutting blade so that the articles can be prevented from being wound by the polishing grinding wheel, and meanwhile the position and the angle of the limiting block can be adjusted according to synchronous steering of the polishing grinding wheel; and the protection effect can be achieved when the grinding wheel rotates forwards and backwards.

The utility model discloses a grinding machine with a rotary housing, which comprises a main body, a grinding wheel component and a dust filtering component are arranged in the main body, the main body is further provided with the housing, the housing covers the periphery of the grinding wheel component and is movably connected with the main body, and a lighting device is arranged in the housing. The housing capable of rotating in a hinged mode is arranged at the position, corresponding to the working position of the grinding wheel, of the grinding machine shell with the rotating housing, and the light source is arranged in the housing, so that the problems of dust splashing, spark splashing and too dark operation light are solved.

The utility model relates to the technical field of grinding machine, especially to a kind of anti-sputtering floor grinding machine.The technical scheme thereof includes support seat and shell, the support seat upper surface is fixedly installed with shell, the shell outer surface both sides position is fixedly installed with protective cover, two the protective cover inside is provided with grinding wheel, two the protective cover front surface is provided with opening, two the protective cover front side is located in opening position is set from top to bottom with two air curtain cover, the support seat inside is fixedly installed with exhaust fan, the exhaust fan input is fixedly connected with dust filter, the dust filter tail end is fixedly connected with dust suction pipe, the dust suction pipe tail end is fixedly connected with dust suction connecting pipe.The utility model can effectively avoid particulate matter splashing during the process of floor grinding machine grinding workpiece, and simultaneously play the role of dust removal, thereby avoiding pollution working environment, also avoiding particulate matter flying into the eye of operator to cause discomfort and harm.

The utility model discloses a grinding machine with dust collector, solved the grinding machine of prior art without dust collection function, and the problem that workpiece is easy to appear sliding in polishing process. The utility model discloses a workbench still includes the grinding machine of being located at workbench, the protective cover of being located at the both ends of grinding machine, dust collection mechanism that is located at the bottom of workbench and is connected with two protective cover and dust collection mechanism that is located in workbench and is connected for collecting the dust collection mechanism of polishing debris, is equipped with the clamping mechanism for clamping workpiece on workbench. The utility model can take out the debris in the protective cover through dust collection mechanism, and polishing debris is transported to the dust collection mechanism and is collected, thereby facilitating subsequent debris processing, and the clamping mechanism can conveniently fix the polishing workpiece, thereby preventing the workpiece from sliding during polishing, which can improve the polishing accuracy of the workpiece.

The utility model discloses a saw blade relief angle machining device which comprises a support and a grinding machine, a clamping assembly is installed on the support, the clamping assembly comprises a supporting rod and a clamping sleeve, a moving assembly is installed on the support and comprises a guide rail and a first motor, a rotating assembly is installed at the bottom of the support, and the rotating assembly is connected with the supporting rod. The rotating assembly comprises a supporting sleeve and a second motor, the supporting sleeve is provided with a positioning assembly, the positioning assembly comprises a worm and an electromagnet, and the supporting rod is provided with a lifting assembly. According to the saw blade relief angle machining device, the third motor can be in threaded fit with the threaded sleeve through the threaded rod until the threaded sleeve is extruded to the button, the third motor is turned off, and the positioning assembly is turned off; when the saw blade is clamped, the clamping sleeve is stopped from being pressed, the clamping firmness of the saw blade is guaranteed, the saw blade is prevented from loosening in the machining process, the safe machining work of the saw blade is guaranteed, the saw blade is prevented from being damaged due to too large clamping force, the safety of the saw blade is guaranteed, and the device is suitable for sharpening the rear angle of the saw blade.

The utility model discloses a floor type grinding machine convenient to adjust and use, and belongs to the field of floor type grinding machines. A rotating frame is pulled, and the angle and the position of an adjusting piece are changed, so that an anti-splashing baffle is aligned to an opening of a protective cover, anti-splashing blocking is achieved, and the safety performance is improved; a plurality of mounting hole sites are formed in the end face of the anti-splashing baffle, arc-shaped elastic strips are connected to the mounting hole sites in the outer end of the anti-splashing baffle, butt joint hole sites matched with the mounting hole sites are formed in the edges of the arc-shaped elastic strips, nylon brushes are connected to the outer ends of the arc-shaped elastic strips, and the nylon brushes make contact with the grinding wheel assembly by changing the angle of the anti-splashing baffle. Through angle and position adjustment of the rotating frame and the adjusting piece, the anti-splashing baffle can be aligned with the opening of the protective cover, anti-splashing blocking is achieved, and therefore the safety performance of the grinding machine is improved. By changing the angle of the anti-splashing baffle, the nylon brush makes contact with the grinding wheel assembly to clean the grinding wheel assembly, cleanliness of the grinding wheel is kept, the service life of the grinding wheel is prolonged, and working efficiency of the grinding wheel is improved.

An assembly for guarding a grinding wheel of a bench grinder and a method for manufacturing an assembly for guarding a grinding wheel of a bench grinder are provided. The assembly includes a fixed guard, a sliding guard, and a locking device. The fixed guard is mounted around the grinding wheel and has an opening that provides access to the grinding wheel. The sliding guard is disposed over the fixed guard and designed to slide over the fixed guard to cover or uncover the opening. The locking device is designed to fix a position of the sliding guard relative to the fixed guard. The position of the sliding guard spans from a first position, which corresponds to complete covering of the opening of the fixed guard by the sliding guard, to a second position, which corresponds to complete uncovering of the opening of the fixed guard by the sliding guard.