64results about How to "Guaranteed sharpness" patented technology

The invention belongs to the technical field of gear machining equipment.The multi-hole gear machining punching equipment comprises a base, a telescopic rod is installed at the upper end of one side of the base, the outer end of the telescopic rod is sleeved with a sliding sleeve, the side end of the sliding sleeve is in threaded connection with a first positioning rod, a positioning table is arranged at the front end of the sliding sleeve, and a control box is installed at the top end of the telescopic rod; the bottom end of the front side of the control box is movably connected with a movable plate, a drill bit is installed at the side end of the movable plate, a cutting fluid spraying piece is arranged at the bottom end of the movable plate, a driving piece is installed at the top of the control box, and a circulating assembly is arranged in the base. Through the arrangement of the first placing assembly and the second placing assembly, personnel can complete single-hole or multi-hole punching operation of the gear by replacing the corresponding first placing assembly or the second placing assembly, meanwhile, cutting fluid in use can be purified, the working environment of use is guaranteed, the cutting fluid is recycled, and the use cost is saved.

The invention discloses an intelligent agricultural tillage land preparation machine, and relates to the technical field of agriculture, the intelligent agricultural tillage land preparation machine comprises a machine body, a soil turning device, a soil loosening device and a weeding device; wherein the soil turning device comprises a connecting frame, wheels, a first gear, a second gear, a first rotating roller, a soil turning shovel, a fertilizer bin, a storage bin, a discharging port, a rotating plate, a supporting plate and a second rotating roller, the connecting frame is fixedly connected to the left side of the machine body, the supporting plate is fixedly connected to the bottom of the machine body, and the first rotating roller rotationally penetrates through the supporting plate; the second rotating roller is rotationally connected to the left side of the supporting plate, and the wheel is fixedly connected to the left side of the second rotating roller. According to the intelligent agricultural tillage land preparation machine, when the first rotating roller rotates, the first rotating roller drives the soil turning shovel to rotate, when the soil turning shovel rotates, the soil turning shovel makes contact with the land, at the moment, the soil turning shovel turns over the land, and planting and rooting of crops are facilitated.

The invention discloses a plate cutting device with a positioning mechanism, and belongs to the technical field of plate cutting, the plate cutting device comprises a cutting seat, a plate groove is formed in the top surface of the cutting seat, and a moving groove is formed in the cutting seat; according to the plate cutting device, the four stable walking assemblies are arranged on the two sides of the cutting structure correspondingly, through the design, the whole device is high in adjustability, cutting can be conducted on different positions of an installed plate, meanwhile, in the cutting operation process, the operation stability of the cutting structure can be continuously guaranteed, and meanwhile the stability of a cut material is guaranteed; the situation that redundant vibration is generated in the cutting process of a cutting material is avoided, the flatness of the cutting face of the material is effectively guaranteed, the whole cutter is protected, the cutting accuracy and precision are improved, meanwhile, in the cutting operation process, the two sides of the cutter can be continuously polished, the sharpness of the cutter is continuously guaranteed, and the cutting efficiency is improved. And the practical application effect of the whole equipment is improved.

The utility model discloses a communication cable cutting device. The communication cable cutting device comprises a cable cutting mechanism and a buffer protection assembly, the buffer protection assembly comprises a cutting knife protection plate, the lower end of the cutting knife protection plate is fixedly connected with a first fixing block through a bolt, and a spring is installed at the lower end of the first fixing block; certain impact force can be generated when the cutting tool cuts the cable, the cutting tool can enter the interior of the cutting edge groove of the cutting tool protection plate to move downwards after completing the cutting action, the impact force of the cutting tool can be further reduced and absorbed, the impact force is absorbed and relieved through compression of fluid, and therefore the cutting tool is protected against damage, and the service life of the cutting tool is prolonged. Damage to the cutting edge of the cutting tool can be reduced and avoided, and stability and machining quality in the cable cutting process are ensured.

The invention discloses a rubber product processing cutting device with an adjusting mechanism, and relates to the technical field of rubber product processing, the rubber product processing cutting device comprises a workbench, two sets of supporting legs are symmetrically installed at the bottom of the workbench, and the rubber product processing cutting device further comprises a cutting assembly arranged in the middle of the top of the workbench, an adjusting assembly, vertical plates symmetrically arranged on the two sides of the top of the workbench, and a cutting assembly arranged in the middle of the top of the workbench, the two vertical plates are symmetrically mounted on two sides of the middle of the top of the workbench, and mounting plates are fixedly mounted at the tops of the two vertical plates; when a rubber plate is cut, the cutter can move back and forth in the downward moving process, so that the cutter moves back and forth to cut the rubber plate, cutting force can be applied more evenly through back-and-forth moving cutting, the situation that the cutting effect is affected due to uneven stress of the cutter is avoided, the cutting force can be dispersed when the cutter conducts cutting back and forth, and the cutting effect is improved. Therefore, impact and abrasion on the cutter in the cutting process are correspondingly reduced, the service life of the cutter is prolonged, and the cutting quality and the cutting effect are improved.

The invention discloses a roll-shaped product waste recovery device suitable for presswork processing, and relates to the technical field of presswork processing, the roll-shaped product waste recovery device comprises a feeding mechanism used for conveying waste, a crushing mechanism used for cutting the waste, and a compacting mechanism used for compacting the waste. According to the roll-shaped product waste recovery device suitable for printed matter processing, the water inlet pipe is connected with an external water source, the water source is output to the inner cavity of the cover body from the atomizing pipe in a water mist mode by means of an external pump, and when a blade passes through the inner cavity of the cover body in the rotating process, tiny water mist particles can be attached to the surface of the blade to form a layer of water film; by means of the technical scheme, the humidifying effect is achieved, adhesion of adhesive stickers in waste materials can be effectively prevented when the humidified blade cuts the waste materials, on one hand, the sharpness of the blade is guaranteed, cutting is smoother and more efficient, and the problems that due to adhesion of the adhesive stickers, the cutting force is reduced, and the cutting quality becomes poor are solved.

The invention relates to the technical field of marine ecological restoration, and discloses an automatic device for ecological restoration of a seaweed bed, which comprises a first discharge hopper, a first feeding mechanism and a second feeding mechanism, the first feeding mechanism and the second feeding mechanism have the same structure, and the first feeding mechanism and the second feeding mechanism are both mounted with the first discharge hopper. Soil on the surface layer of the sea grass bed and soil on the deeper layer of the sea grass bed are laid back to the earth surface through a first discharging hopper and a second discharging hopper through a soil turning mechanism installed on the first feeding mechanism and a soil turning mechanism installed on the second feeding mechanism correspondingly, so that the soil on the surface layer is covered with the soil on the deeper layer; through deep ploughing operation on surface soil and deeper soil in sequence, deep treatment can be carried out on soil of a sea grass bed, the soil structure and quality are further improved, the soil depth is increased, more root system growth space is provided, and growth of sea grass and rooting of root systems are facilitated.

The invention belongs to the technical field of sheet processing, and particularly relates to a sheet rolling and cutting device which comprises a base, a supporting frame and a PLC, the supporting frame and the PLC are arranged on the upper side wall of the base, the inner wall of the supporting frame is rotationally connected with an adjusting roller, the front side wall of the supporting frame is fixedly connected with an adjusting motor, and the output end of the adjusting motor penetrates through the supporting frame. The device comprises an adjusting roller and is fixedly connected with the adjusting roller, four mounting frames are fixedly connected to the outer wall of the adjusting roller, winding assemblies are rotationally connected into the mounting frames, winding motors are fixedly connected to the front side walls of the mounting frames, and the output ends of the winding motors penetrate through the mounting frames. After a sheet with a certain thickness is wound by using the winding drum, the sheet can be automatically cut, and meanwhile, the cut end part of the sheet is fixed on the surface of the other winding drum, and the equipment does not need to be paused for a long time, so that the working efficiency of sheet winding is improved, and the workload of operators is also reduced.

The utility model relates to the technical field of weeding machines, and provides a mowing machine cutterhead assembly capable of preventing adhesion passivation and convenient to clean, which comprises a cutterhead body and a connecting column arranged in the center of the cutterhead body, and a plurality of cutterhead body scraping frames are movably clamped on the connecting column. The cutter head body scraping frame comprises a limiting roller head movably clamped to the connecting column and an upper contact frame with one end arranged on the outer wall of the limiting roller head, a lower contact frame is arranged at the other end of the upper contact frame, a twisting device is arranged between the end of the upper contact frame and the end of the lower contact frame, and after the cutter head body is stained with attachments, the cutter head body scraping frame is pressed downwards, so that the cutter head body is scraped. And the lower contact frame is pulled open, so that the lower contact frame and the upper contact frame cover the cutter head body under the action of the twisting device, and the cutter head body is rotated to scrape and remove attachments on the surface of the cutter head body.

The invention relates to a gun barrel capable of automatically cutting an elastic thread at a time. The pushing pipe is inserted into the inner side of the gun barrel body; the sleeve is arranged on the inner side of the push pipe, and a connecting pipe is arranged on the sleeve; the thread cutter is rotationally arranged on the push pipe; the broach assembly is arranged on the inner side of the gun barrel body; the broaching tool assembly comprises a broaching tool rod and a broaching tool plate, and a pressing tool connecting rod is arranged at a notch in the head of the broaching tool rod and abuts against the thread cutting tool; the tail part of the broach rod is connected with a broach plate, and a bending part is arranged at the free end of the broach plate; the stay wire assembly is arranged on the inner side of the gun barrel body; the stay wire assembly comprises a stay wire rod and a stay wire plate, one end of the stay wire plate is provided with a buckle used for being connected with the stay wire rod, and the buckle is provided with a boss matched with the bent part; the knotted elastic thread sleeves the end part of the sleeve, and the knotted end of the elastic thread is fixedly connected with the stay wire rod. According to the automatic cutting device, the elastic thread can be automatically cut, operation is easy, and the consistency of the loop ligature tightening degree and the consistency of the thread breaking position can be achieved.

A single-edge sharpening kitchen knife capable of keeping sharpness comprises a knife body and a knife handle and is characterized in that one side face of the knife body is a vertical face, the other side face of the knife body is an inclined face, the vertical face is subjected to heat treatment to form a superhard hardened layer with the hardness of HRC80-HRC85, the hardness of the inclined face is HRC45-HRC50, the vertical face faces the side of food materials to be cut, and the knife handle is arranged on the knife handle. And the inclined surface is a blade grinding surface. According to the kitchen knife sharpener, the sharpness of a kitchen knife can be kept for a long time, even if the kitchen knife needs to be sharpened, single-face knife sharpening is carried out on an inclined face with the hardness of HRC45-HRC50, a superhard hardened layer cannot be damaged, time and labor are saved in operation, the knife sharpening efficiency is high, the requirement for the technical level of knife sharpening of an operator is not high, a common operator can complete knife sharpening work, and the knife sharpening cost is extremely low.

The utility model discloses a kind of outer hexagonal nut machining chip removal mechanisms, it is related to nut production technical field, including chassis, the middle fixed connection of chassis is limit sleeve one and limit sleeve two, the inner side wall of limit sleeve one is rotatably connected with rotating shaft one, the inner side wall of limit sleeve two is rotatably connected with rotating shaft two, in the utility model, three blades of processing tool cantilever after cutting outer hexagonal nut, its surface is easy to adhere to chip, if not cleaning can reduce blade sharpness and processing accuracy.Arc cover one is rotated 120 degrees in the range after corresponding blade leaves workpiece, airflow generated by axial fan is guided through arc cover two, when passing through the gradually narrow passage between the conical plate on the supporting plate, flow rate is enhanced, can efficiently blow off chip on blade, ensure that blade always maintains good sharpness, to ensure the accuracy of subsequent outer hexagonal nut polishing, reduce the processing error caused by chip residue, improve the stability of product quality.

The application discloses a device for eliminating the burr defects of hot-rolled stainless steel edges, which comprises a mounting plate, an adjusting mechanism, an edge cutting mechanism, a flat polishing mechanism and a side polishing mechanism, wherein the adjusting mechanism, the edge cutting mechanism, the flat polishing mechanism and the side polishing mechanism are arranged on the mounting plate, the edge cutting mechanism is arranged at one end of the mounting plate, the side polishing mechanism is arranged at the other end of the mounting plate, and the flat polishing mechanism is arranged between the edge cutting mechanism and the side polishing mechanism; the adjusting mechanism is movably connected with the mounting plate to adjust the spacing; and the mounting plate is arranged on a mounting frame. The edge cutting mechanism can cut the edges of the stainless steel plate, then the flat polishing mechanism and the side polishing mechanism can polish the cut edges of the stainless steel plate and remove the burrs. Furthermore, the edge cutting mechanism is additionally provided with a cleaning mechanism and a grinding mechanism, the cleaning mechanism can effectively clean the adhered sundries on the cutter to keep the cutter clean, the grinding mechanism can grind the cutter in real time to ensure the sharpness of the cutter, so that the cutter can cut quickly and the burrs can be reduced.

This invention relates to the field of silica gel recycling technology, and discloses a crushing device and recycling method for recycling waste silica silica gel. The crushing device for recycling waste silica silica gel includes a support frame and a twin-shaft crusher. A mixing mechanism is provided on the upper part of the support frame for mixing silica gel and lubricating powder. The mixing mechanism includes a mixing chamber, which is fixedly connected to the upper part of the support frame. A feed inlet is fixedly connected to the side of the mixing chamber away from the twin-shaft crusher. Multiple rollers are rotatably connected inside the mixing chamber. This invention uses the mixing mechanism to evenly coat the strip-shaped waste silica gel with lubricating powder, thereby reducing the adhesion and accumulation of silica gel on the surface of the moving blades of the twin-shaft crusher due to softening and high viscosity. This not only reduces the operating load of the motor and avoids the risk of motor overheating, tripping, or burning out, but also maintains the sharpness of the moving blade teeth, ensuring stable shearing and tearing effects and preventing excessive compression and clumping of materials.

The invention discloses a cutting and forming device for building block manufacturing, and relates to the technical field of building block cutting and forming devices.The cutting and forming device comprises a base and a support, the support is fixedly installed on the surface of the base, a sliding table is slidably installed on the surface of the support, a motor and a saw blade are arranged in the sliding table, and a saw chain sleeves the surface of the saw blade and is connected with the output end of the motor; a telescopic rod is rotatably installed on the surface of a base, a gland is fixedly installed at the free end of the telescopic rod, the gland is attached to the surfaces of bricks by rotating the gland, the horizontal height of the gland is adjustable through the telescopic rod so as to adapt to the bricks of different heights, and the bricks of different models can be effectively fixed; a hook is rotatably mounted at the position, close to the buckle, of the surface of the gland, and the gland is provided with a telescopic rod, so that the gland can fix bricks of different heights to adapt to cutting of different types of bricks.

The invention discloses a medical orthopedic annular casing drill, and relates to the field of medical equipment, a drill bit is provided with an inclined cutting assembly, and chip removal assemblies are arranged between a drill body and the drill bit; the inclined cutting assembly comprises a tool face, a first auxiliary rear tool face, a second auxiliary rear tool face, a first main rear tool face, a front tool face and a second main rear tool face, wherein the first main rear tool face and the front tool face intersect to form a main cutting edge; the chip removal assembly comprises an inner cavity, an inner cavity face, an inclined opening and a vent hole, the inner cavity is formed in the drill bit, the inner cavity face is obliquely arranged in the inner cavity, and the inclined opening matched with the inner cavity face is formed in one end of the vent hole. The cutting edge inclination angle ensures the sharpness of the drill bit, the axial relief angle is formed by the reference plane included angle formed by the main cutting edge and the central axis of the drill body, the situation that a tool nose is broken due to large cutting resistance is effectively prevented, and fine bone chips generated during drilling are discharged through vacuum chip suction.

The utility model relates to the technical field of hair trimmer, and discloses a heat dissipation structure and a hair trimmer, the heat dissipation structure comprises a machine body and a stationary knife, a heat dissipation air channel communicated with the outside is arranged in the machine body, a blowing device and a heat dissipation part are arranged in the heat dissipation air channel, and the heat dissipation part is used for conducting heat on the stationary knife; during use, heat of the heat dissipation component is conducted to air in the heat dissipation air duct, and the air blowing device works to discharge the air with heat in the heat dissipation air duct to the outside. The device is simple in structure and low in production cost; heat on the fixed cutter can be absorbed through the heat dissipation component, and the heat of the heat dissipation component is discharged to the outside through the air blowing device, so that the heat dissipation and cooling effects on the fixed cutter are achieved, the temperature of the fixed cutter is prevented from being too high, lubricating agents do not need to be frequently added to the fixed cutter, the fixed cutter is not prone to thermal fatigue, sharpness of the fixed cutter is guaranteed, and the service life of the fixed cutter is prolonged; the fixed knife is prevented from scalding human bodies and the use experience is improved.

The utility model belongs to the technical field of FPC (Flexible Printed Circuit) processing, and particularly provides an FPC shearing jig which comprises an FPC supporting seat, a device supporting seat and a cutter assembly, a positioning plate is detachably mounted on the FPC supporting seat; the FPC supporting seat is provided with a pressing assembly used for fixing an FPC. The device supporting seat is arranged on one side of the FPC supporting seat, and a cutting groove is formed between the device supporting seat and the FPC supporting seat; the cutting groove is located in the cutting stroke of the cutter assembly. According to the FPC shearing jig provided by the utility model, the FPC board is accurately positioned through the clamp and then is sheared, the operation is simple, the consistency is good, the section flush precision is high, the subsequent process is facilitated, the operation intensity of staff is reduced, and the flexible FPC board shearing work can be quickly completed. The positioning plate and the device supporting seat of the shearing jig can be replaced according to the actual sizes of the to-be-sheared FPC and the device connected with the to-be-sheared FPC, so that the FPC boards of different products can be sheared.

The utility model belongs to the technical field of rotary presses, and particularly relates to a cutting mechanism of a rotary press, which comprises a box body, a supporting table top is fixedly arranged on the upper side wall of the box body, guide mechanisms are arranged at the left end and the right end of the supporting table top, a cutting opening is formed in the side wall of the supporting table top, and a cutting groove is formed in the side wall of the cutting opening. A support is fixedly arranged at the rear end of the upper side wall of the supporting table top, so that in the process that a first electric push rod drives a cutting knife to move downwards in a transmission mode, two pressing wheels can make contact with printing paper firstly, and along with continuous moving downwards, the two pressing wheels can press the printing paper to be attached to the supporting table top and flatten the printing paper towards the two ends; and finally, the printing paper is cut through the cutting knife, and it is guaranteed that notches are neat. And when the cutting knife becomes pause after being used for a long time, the two polishing blocks can be matched with the cutting knife, so that the cutting knife is rapidly polished, and the sharpness of the cutting knife is guaranteed.

The present invention relates to the technical field of turning tools, and discloses an indexable turning blade with an integrated design for roughing and finishing, the blade comprising an upper surface, a lower surface and a plurality of vertex angles, arc cutting edges being provided at the vertex angles, a roughing cutting edge and a finishing cutting edge being connected to the two ends of the arc cutting edge, respectively, a roughing chip groove being provided between the roughing cutting edge and the upper surface of the blade, a finishing chip groove being provided between the finishing cutting edge and the upper surface of the blade, a chip breaker being provided between the roughing chip groove and the finishing chip groove, the chip breaker being provided between the arc cutting edge and the upper surface, the roughing cutting edge and the finishing cutting edge coexisting between adjacent vertex angles, and the roughing cutting edge and the finishing cutting edge being connected via a transition surface. The present application creatively integrates the cutting edges for roughing and finishing on one blade, and one tool can be used to complete all turning processes when machining parts, and there is no need to change tools during machining, which is convenient to use and can effectively improve machining efficiency. In addition, there is no need to separately manufacture roughing tools and finishing tools, and the tool cost is significantly reduced.

The utility model provides a cable cutting device which relates to the technical field of cable cutting and comprises a base, a supporting plate is fixedly installed on the top face of the base, an air cylinder is fixedly installed on the side face of the supporting plate, a push rod is installed at the output end of the air cylinder, and a connecting block is fixedly installed at one end of the push rod. A vertical plate is fixedly installed on the top face of the base, a shaft rod is fixedly installed on the surface of the vertical plate, a blade is rotationally connected to the surface of the shaft rod, a short groove is formed in the surface of the blade, a connecting rod is fixedly installed on the back face of a connecting block, and a limiting block is fixedly installed on the surface of a push rod. A lead screw is arranged on the side face of the supporting plate in a penetrating mode. According to the utility model, the propelling depth of the air cylinder is controlled by adjusting the turntable, so that the cutting depth and angle of the blade are accurately controlled, which is particularly important for cables needing to be accurately cut, the cutting accuracy and repeatability can be ensured, the processing process of cable stripping is particularly facilitated, and the practicability is higher.

The utility model discloses a cutter which comprises a cutter body, the cutter body comprises a blade, at least part of the area of the cutting edge of the cutter body is connected with a cutting edge reinforcing piece, and the hardness of the cutting edge reinforcing piece is larger than that of the cutter body. The cutting edge reinforcing piece is arranged on the cutter, so that the cutter has enough hardness to cut food materials, the cutter body does not need to be made of a high-hardness material, the cutter body can be made of a material which is relatively low in hardness or high in biocompatibility but soft in texture, and therefore the manufacturing cost of the cutter body is reduced while punching on the cutter body is facilitated; due to the fact that the knife body does not need to have high hardness so as to meet the requirement for fitting food materials, the knife body can be selectively designed to be light and thin, the light weight of the knife is facilitated, and the use experience of a user is improved; and the cutting edge reinforcer is high in strength and durability, so that the service life of the cutter is prolonged.

The utility model discloses a knife box, which relates to the field of knife rests, and adopts the technical scheme that the knife box comprises a box body and a pressurizing arm, an inner cavity is formed in the box body, a cavity opening is formed in the inner cavity, the pressurizing arm is arranged in the inner cavity, one end of the pressurizing arm is hinged to the inner end of one side of the inner cavity, and a spring is arranged between the back face of the other end of the pressurizing arm and the outer end of one side of the inner cavity; the spring pushes the other end of the pressurizing arm to the other side of the inner cavity, and a V-shaped sharpening clamping opening is formed in the front face of the other end of the pressurizing arm. The spring is adopted to push the V-shaped knife grinding clamping opening formed in the pressure applying arm to make contact with the knife edge, the knife edge can be ground and the sharpness of the knife edge can be kept in the knife inserting and pulling processes, the spring provides pressure, and more labor is saved.

The invention relates to the technical field of flying saws, in particular to a servo follow-up fixed-length tracking method for a high-precision cold cutting flying saw and the flying saw.The flying saw comprises an equipment frame, two guide rails are fixedly connected to the equipment frame, a movable saw blade is arranged below a movable seat, a transmission shaft is rotationally connected to an adjusting frame, and a fixed saw blade is arranged on the transmission shaft; the saw blade maintenance mechanism is fixedly connected to the adjusting frame, when cutting is needed, the movable saw blade can be driven by the threaded rod to be adjusted, so that the distance between the movable saw blade and the fixed saw blade reaches the needed precision, then the movable saw blade and the fixed saw blade can be driven by the transmission shaft to rotate and cut at the same time, and the cutting efficiency is improved. The cutting of a single saw blade is avoided, particularly during mass production, the production period can be remarkably shortened, the overall production efficiency is improved, cutting of different widths can be easily achieved by adjusting the distance between the two saw blades, and diversified production requirements are met.

A ginseng stem and leaf crushing device relates to the technical field of ginseng stem and leaf processing and comprises a crushing barrel, two striker plates are slidably connected in the crushing barrel, a convenient tool changing mechanism is arranged in the crushing barrel and comprises a top cover, and four fixing rods are fixedly connected to the outer surface of the top cover. A servo motor is fixedly connected to the inner wall of the crushing barrel, a driving rod is fixedly connected to the output end of the servo motor, a first clamping block is fixedly connected to the top end of the driving rod, and four limiting rods are fixedly connected to the outer surface of the crushing barrel; the crushing barrel, the material blocking plate, the top cover, the fixing rod, the limiting rod, the limiting plate, the auxiliary bearing, the driven rod, the second clamping block, the servo motor, the driving rod, the first clamping block and the crushing cutter body are matched with one another; and the limiting plate is clamped with the limiting rod, so that the second clamping block below the top cover and the first clamping block on the servo motor can be stably clamped into the crushing cutter body.

The utility model discloses cloth trimming equipment capable of preventing burrs, which belongs to the technical field of garment production and comprises a processing table, a support is fixedly connected onto the processing table, a cutting hole and a movable hole are respectively arranged at the upper end of the processing table, a pair of symmetrical guide plates is fixedly connected onto the upper end of the processing table, and the guide plates are fixedly connected onto the support. A cutting assembly is arranged on the support, a burr preventing assembly is arranged on the machining table, the cutting assembly comprises a cutting knife, the cutting knife is matched with a cutting hole, and the cutting knife is located over the cutting hole. According to the scheme, the cutting knife can be regularly replaced, cloth can be prevented from generating burrs or being torn in the cutting process, the cutting knife can be regularly polished through the burr preventing assembly, the sharpness degree of the cutting knife is kept, and compared with an existing scheme that the cutting knife is regularly replaced, more cost is saved when the cutting knife is regularly polished through the scheme.

This invention discloses a single-crystal end mill for processing light guide plates, comprising a shank and a cutting section disposed at one end of the shank. The cutting section includes a core and two inserts. The core is coaxially connected to the shank and is a quadrangular prism with a parallelogram cross-section. The angle between the short and long sides of the parallelogram is 70 degrees. The two inserts are respectively embedded on the outer surface of one side of the short side of the core. The cutting edges of the two inserts are parallel to the central axis. One end of the insert is flush with one long side of the core, and the other end protrudes beyond the other long side of the core. The rake angle of the insert is 35 degrees. The insert has a first clearance angle, a second clearance angle, and a third clearance angle sequentially arranged from the cutting edge inwards. The first clearance angle is 1 to 1.4 degrees, the second clearance angle is 28 degrees, and the third clearance angle is 32 degrees. The insert is made of single-crystal diamond. This invention has the advantages of reasonable and reliable structure, long service life, high processing efficiency, low product scrap rate, and ensuring smooth processing of light guide plates.

The invention discloses a multi-cutting-edge tooth-shaped cutter and a manufacturing method, the multi-cutting-edge tooth-shaped cutter comprises a cutter head and a cutter handle, a plurality of cutter teeth evenly distributed in the circumferential direction are arranged on the first face of the cutter head, a chip groove is formed between every two adjacent cutter teeth, the second face of the cutter head is fixedly connected with the cutter handle, cutting edges are arranged on the cutter teeth, and the cutting edges are arranged on the first face of the cutter head. The cross section of the cutter teeth and the cross section of the cutting edge are both trapezoidal, the wide ends of the cutter teeth are connected with the cutter head, the narrow ends of the cutter teeth are connected with the cutting edge, the wide ends of the cutting edge are connected with the corresponding cutter teeth, the narrow ends of the cutting edge are used for cutting workpieces, and steps are formed between the first side of the cutting edge and the cutter teeth. The second side of the cutting edge coincides with the corresponding side of the cutter teeth. On the premise that the sharpness of the cutting edge is guaranteed, the structural strength of the cutting edge and the cutter teeth is guaranteed, the service life of the cutter is prolonged, and the possibility that the surface of a workpiece collapses and the cutter collapses is reduced.

The utility model belongs to the technical field of stepped milling cutters, particularly relates to a replaceable wear-resistant stepped milling cutter for machining an automobile crankshaft, and solves the problems that a blade part with the outer diameter size is possibly abraded due to long-time use of the milling cutter in the prior art, and the cost of a user is increased when the blade part is replaced due to integral connection between the blade part and a cutter handle. According to the scheme, the tool comprises a first tool bit. According to the milling cutter, the fourth mounting groove, the third mounting groove, the second mounting groove and the first mounting groove are matched with the first cutter block, the second cutter block and the third cutter block which are mounted in the first mounting groove, so that when the cutting edges of the cutter blocks are abraded, a user can only replace the abraded first cutter block, the abraded second cutter block and the abraded third cutter block, and does not need to replace the whole milling cutter; the use cost is greatly reduced, meanwhile, the machining efficiency and the product quality are improved, remarkable economic benefits are brought to enterprises, and the production efficiency, the product quality and the like are improved.

According to the joint cutting device for building construction slotting, the distance between cutting discs is adjusted through the cutting device, so that the joint cutting device can meet the cutting requirements of different widths, the cutting task can be completed in the one-time cutting process, and compared with manual correction after single-disc cutting, the joint cutting device has the advantages that the cutting precision can be remarkably improved; and water in a water tank is conveyed to a dust removal and cooling protection cover through a negative pressure water pump, then the water is sprayed to a cutting area through a spray head of the dust removal and cooling protection cover, the temperature of the fixed cutting disc and the temperature of the movable cutting disc are effectively reduced, and the cutting efficiency is improved. According to the water mist cutting device, the cutting speed is increased, the overall working efficiency is improved, meanwhile, suspended particles in air can be reduced through water mist, sparks can be restrained, the problem of serious dust pollution is solved, the fire risk is reduced, and the safety during construction is effectively improved.