18 results about "Large tooth" patented technology

A kettlebell comprises a main weight block and several weight blocks, a teeth meshing plate is disposed on a top surface of the main weight block; a rotating shaft having an upper engaging rod and a lower engaging rod, the lower engaging rod optionally engages on the teeth meshing plate; a large teeth plate can move elastically, the large teeth plate is provided with first engaging teeth on a periphery of a through hole annularly; a connecting plate annularly provided with second engaging teeth movably meshing with the first engaging teeth, a lower end surface of the connecting plate is annularly provided with connecting teeth connected with the upper engaging rod. Positions of the connecting plate can be changed through the upper engaging rod, the main weight block can be fixed on the lower engaging rod, so that actions of the kettlebell can be switched reliably, and the rotating shaft can rotate freely without weight.

The invention belongs to the technical field of mining hard alloy, and particularly relates to a mining hard alloy tooth and a passivation method thereof.The passivation method comprises the following steps that S1, a first mining hard alloy tooth and sodium phosphate are obtained; s2, the first mining hard alloy tooth, pure water and sodium phosphate are added into a passivation machine to be passivated, and then the mining hard alloy tooth is obtained; the first mining hard alloy teeth comprise large teeth and small teeth, the diameter of the large teeth is larger than 8 mm, and the diameter of the small teeth is smaller than or equal to 8 mm. The large teeth and the small teeth are matched, so that the contact area is increased, the passivation efficiency is improved, and meanwhile, the production efficiency is also improved; alkalescent sodium phosphate is selected as a passivating agent, so that an oxide layer and impurities of the hard alloy teeth can be removed, a layer of passive film is formed, and the surface quality of the hard alloy teeth is improved; and the interior of the passivation machine is surrounded by resin, and the softness of the resin prevents the hard alloy teeth from falling off edges and corners when poured into the passivation machine.

The utility model discloses a left-right difference ratchet wheel structure which comprises a handle body head, a center installation hole is formed in the middle of the top face of the handle body head, a lower adjusting groove extending backwards is formed in the inner side wall of the middle of the rear portion of the center installation hole, and an installation through hole extending upwards is formed in the bottom face of the rear portion of the handle body head. The ratchet head is inserted into the center mounting hole in a sleeved mode, an outer tooth part is formed on the outer side wall of the ratchet head, a pawl block is inserted into the lower adjusting groove in a sleeved mode, a tooth-shaped part is formed on the front wall face of the pawl block, the tooth-shaped part is matched with the outer tooth part, one half of the tooth-shaped part is a large tooth part, and the other half of the tooth-shaped part is a small tooth part. And the size of the large tooth part is twice that of the small tooth part. Half of a tooth-shaped part of a pawl block is a large tooth part, the other half of the tooth-shaped part of the pawl block is a small tooth part, and the size of the large tooth part is twice that of the small tooth part.

The application discloses a large internal ratchet wheel machining method, which comprises the following steps: S1, rotating a machine tool B shaft; S2, tooling a ball cutter (4) installed on the machine tool B shaft accessory with any two points on a large tooth surface of a tooling slot and any one point on a small tooth surface respectively to obtain coordinate values of each tooling point in a cutter tip coordinate system; S3, according to the intersection of a tooth root virtual circle under the cutter tip coordinate system and the connecting line of the two tooling points on the large tooth surface, the intersection point constitutes the coordinate values of a tooth root vertex in the cutter tip coordinate system, and the coordinate values of the tooth root vertex in the cutter tip coordinate system and the offset of the cutter tip coordinate system relative to a part coordinate system are obtained according to a trigonometric function relationship; and S4, the offset is used for compensating the cutter tip position deviation generated by the rotation of the machine tool B shaft. The technical effect of the application is that qualified large internal ratchet wheels are machined by compensating the cutter tip position deviation and the part tooth slot phase deviation, qualified large internal ratchet wheels are machined on a machine tool by using a common ball cutter, and production cost is saved.

The utility model discloses an embracing type bridging coupling oil pipe centralizer which is formed by oppositely splicing a front semi-cylindrical structural body and a rear semi-cylindrical structural body which are symmetrical in structure, the structural bodies are of an integrated structure, and the two structural bodies are clamped through a plurality of steel belts. Each structural body is formed by sequentially connecting a small tooth block, an upper closing groove, a large tooth block, a middle closing groove, a middle structure, a middle closing groove, a large tooth block, an upper closing groove and a small tooth block from top to bottom; and the small tooth block, the upper closing groove, the large tooth block and the middle closing groove are all semi-cylindrical. The outer diameters of the small tooth block, the large tooth block and the middle structure are equal, and the height of the small tooth block is smaller than that of the large tooth block; the sum of the outer diameter of the upper closing groove and the thickness of the steel belt and the sum of the outer diameter of the middle closing groove and the thickness of the steel belt are equal to the outer diameter of the middle structure. The whole structure is easy to achieve, convenient to install and not prone to displacement. In addition, the manufacturing cost is low, and meanwhile the device can still be repeatedly used after pump inspection and well repair.

The application belongs to the technical field of mining hard alloy, and particularly relates to a mining hard alloy tooth and a passivation method thereof, the passivation method comprising the following steps: S1, obtaining a first mining hard alloy tooth and sodium phosphate; S2, adding the first mining hard alloy tooth, pure water and the sodium phosphate into a passivation machine for passivation to obtain a mining hard alloy tooth; the first mining hard alloy tooth comprises large teeth and small teeth, the diameter of the large teeth is greater than 8 mm, and the diameter of the small teeth is less than or equal to 8 mm. The application increases the contact area and improves the passivation efficiency by matching the large teeth and the small teeth, and the production efficiency is also improved; the sodium phosphate with weak alkalinity is selected as the passivating agent, the oxide layer and impurities of the hard alloy tooth can be removed, a passivation film is formed, and the surface quality is improved; moreover, the passivation machine is surrounded by resin, and the softness of the resin prevents the hard alloy tooth from being poured into the passivation machine to cause edge and corner defects.

The utility model discloses a multi-punching-tooth riveting press forming gear, and relates to the technical field of gear machining and manufacturing, the multi-punching-tooth riveting press forming gear comprises a knurled shaft pin and further comprises a connecting mechanism arranged on the outer side of the knurled shaft pin, and the connecting mechanism can reduce cost while guaranteeing the strength of the gear. The multiple sets of large driven teeth and the multiple sets of small driving teeth are all arranged on the outer side of the knurled shaft pin in a sleeving mode, a traditional large tooth is evenly divided into three identical single large driven teeth through stamping equipment, a traditional small tooth is divided into three single small driving teeth, and the unique multi-stamping-tooth riveting forming technology can meet the set working condition requirement and also can be used for manufacturing the large driven teeth and the small driving teeth. The obvious technical advantages are also shown.

An arc-shaped oscillating saw blade with large and small teeth and an oscillating saw are provided. The arc-shaped oscillating saw blade with large and small teeth includes a connecting part and a cutting part. Sawteeth of the cutting part are arranged in an arc shape, and a plurality of adjacent sawteeth form a sawtooth unit, and each sawtooth unit includes a plurality of large teeth and a plurality of small teeth, thus forming a structure with the large and small teeth interleaved. With structural design of the saw blade with interleaved large and small teeth, an effective cutting area of the saw blade can be increased. With design of incremented angles, the sawteeth distributed in the arc shape can be formed, which facilitates reducing of the impact and vibration in the cutting process and further improves the cutting accuracy.

The utility model discloses a thin film switch key sheet punching device which comprises a main body unit which comprises a lower platform and a base plate located over the lower platform. The horizontal fine adjustment unit comprises a plurality of wedge-shaped blocks transversely and slidably connected with the upper side wall of the lower platform and a plurality of fixing lugs fixedly installed on the upper side wall of the lower platform, the fixing lugs are in threaded connection with corresponding screw rods, and each screw rod penetrates through the corresponding fixing lug to be rotationally connected with the corresponding wedge-shaped block; a small tooth column is rotationally connected to the side, away from the wedge-shaped block, of the fixing lug, a large tooth disc meshed with the small tooth column is fixedly connected to the end, away from the wedge-shaped block, of the threaded rod, and a top block abuts against the corner of the lower side wall of the base plate. According to the utility model, the cutter does not need to be replaced when the cutter is abraded, so that the time delayed by shutdown is saved, the production cost of membrane switch punching is reduced, and the punching efficiency of the punching equipment on the membrane switch key sheet is improved.

The utility model provides a big gear interval cutting saw blade, this big gear interval cutting saw blade includes saw handle, be provided with a plurality of saw tooth on the saw handle, the interval between saw tooth is bigger than the width of saw tooth, be provided with trapezoidal protection spare between saw tooth, the side surface of trapezoidal protection spare is in line with the side surface of saw tooth. The utility model provides big gear interval cutting saw blade, the interval between saw tooth is bigger, therefore set up trapezoidal protection spare between saw tooth, the side surface of trapezoidal protection spare is in line with saw tooth, from the side surface holds saw tooth, thereby when saw tooth carries out cutting operation, provided the protection effect of side surface, reduced the possibility of saw tooth fracture, thereby improved the service life of saw blade.

The utility model provides an accessory type agricultural film removing rake. The accessory type agricultural film removing rake comprises a base plate. Teeth are arranged at the bottom of the base plate, a baffle is detachably inserted and fixed in the middle of the base plate, and a rod body is connected and fixed to the baffle; and the teeth at the bottom of the substrate at least comprise three teeth with different lengths or diameters. Based on the arrangement of various teeth and the accessory type detachable structure, different combinations of various teeth can be effectively replaced according to different requirements, the advantages of large teeth and small teeth are effectively integrated, the problem that the large teeth cannot be cleaned up is solved, the problem that the small teeth are prone to winding is solved, and the service life of the gear is prolonged. The labor cost is greatly reduced, and the operation efficiency of agricultural film removal in small-scale planting is greatly improved.

The application discloses a light probe measurement method for a micro gear. The method is based on a light probe measuring head of a point self-focusing principle. Firstly, a standard ball is used to determine the maximum allowable measurement inclination angle of the light probe measuring head, then the offset distance required for measuring different modulus gears is determined, the measurement path is planned, and then the acquisition of the full tooth surface data of the micro gear is realized. The application adopts a 632.8nm wavelength laser, is equipped with a 100 times microscopic objective lens, and can adjust a laser spot with a spot diameter less than 1um. The application can be used for measuring the gear slot of a micro gear with a modulus less than 0.1mm. The measurement path adopted by the application can effectively reduce the measurement error introduced by the too large tooth surface inclination angle, and improves the measurement precision of the gear measurement. The method has wide application, and is especially suitable for the full tooth surface measurement of the micro gear.

The application discloses a kind of deep hole big tooth high bolt hole thread defect scanning devices, including video inspection pedestal, inspection pivot, planetary gear, servo motor, planet carrier, linear array optical scanning device and inner ring gear;Planetary gear is connected with planet carrier, and linear array optical scanning device is carried in planet carrier lower side, and several radial observation camera groups are installed on linear array optical scanning device, and radial observation camera group is distributed along vertical direction;Wherein, servo motor is connected with planetary gear, controls planetary gear rotation around inner ring gear, and then controls linear array optical scanning device to carry out annular scanning around thread hole.This device uses planetary gear inner rotation motion detection mode, can adjust two-dimensional vision detection platform according to actual working condition to obtain highest definition detection effect, completely solves the automation, continuousness, adaptable multi-working condition requirement of deep hole big tooth high bolt hole detection, realizes high-efficiency, precision, safe detection target.

This utility model relates to the technical field of hot grinding mills, and particularly to a toothed structure for a grinding disc of a MDF hot grinding mill. The grinding disc includes an inlet area and an outlet area on its outer side. A cemented carbide plate is mounted on top of the grinding disc, and a flow guide groove is formed above it. Composite tooth tips are mounted on the upper surface of the grinding disc, and a connecting groove extends through the upper surface. A connecting rod is provided inside the connecting groove. With this toothed structure, material enters from the inlet area, undergoes coarse crushing by the high pitch and large tooth spacing of the gradually tapering teeth and the thrust of the helical teeth, and then moves to the outlet area for fine grinding with low pitch and small tooth spacing, improving accuracy. The composite tooth tips provide primary shearing, the tooth root reinforcing ribs stabilize and extend lifespan, the chip removal groove prevents fiber adhesion, the flow guide groove accelerates flow, the hollow design improves heat dissipation, and the vibration is transmitted and damped by a damping ring and spring, reducing equipment wear.

The invention relates to a motor stator winding structure with high power volume density, and solves the problem that the power volume ratio of a motor in a flat space is small when a traditional radial motor structure is adopted. The structure comprises a stator main body, the stator main body comprises large teeth and small teeth which are alternately arranged in the circumferential direction, the large teeth are made of SMC materials, the large teeth are provided with large tooth yoke parts, large tooth parts and large tooth boots, winding grooves are wound outside the large tooth parts, stator winding coils are arranged in the winding grooves, the axial width of the large tooth parts is smaller than the axial width of the large tooth yoke parts, and the small teeth are made of SMC materials. And the cross section areas of all radiuses of the tooth part of the large tooth from outside to inside are kept uniform. The motor mechanism and the geometric tooth form of the motor are optimized based on the concentrated winding coil winding characteristics, the slot space factor of the motor is improved, and the electrical load capacity of the motor is improved. The magnetic density distribution of the tooth part is uniform, and the utilization rate of the soft magnetic material is maximized; the axial end space is fully utilized for magnetism gathering, the magnetic load is improved, and the motor power volume density is further improved.

The invention relates to a modified Lucas dental curette comprising grooves that allow the formation of sharper, larger teeth and which allow efficient removal of diseased tissue. Specifically, a modification is made to current serrated Lucas curettes (called a Charnley curette in this invention), which comprises cutting grooves or indentations, to form irregular asymmetrical teeth around the entire cup, the cup hollow also being deeper or more pronounced.

The utility model relates to the technical field of air pumps, in particular to an air pump machine core which comprises an air cylinder, a piston, a gearbox, a large shaft, a large tooth, a small tooth, a motor and a bearing, the air cylinder is slidably connected with one end of the piston, the other end of the piston is rotatably connected with the edge of the large tooth, the middle of the large tooth is in transmission connection with the gearbox, and the large shaft and the bearing are arranged between the large tooth and the gearbox. A center hole in the large tooth is in close-fitting connection with one end of a large shaft, the other end of the large shaft is in close-fitting connection with a center hole of a bearing, a center hole in the gearbox is in close-fitting connection with the outer side of the large shaft, a small tooth is arranged on a rotating shaft of the motor, and the small tooth on the rotating shaft of the motor is meshed with an annular tooth on the edge of the large tooth. According to the utility model, the guide bone and the stop block are arranged, so that the assembly is easy and simple, one end of the large shaft is in close-fitting connection with the large tooth, and the other end of the large shaft is in close-fitting connection with the center hole of the bearing, so that a fastening screw is saved, the cost is saved, and a station is saved.

The utility model provides a kind of unequal tooth width split type iron core, including outer layer A iron core, inner layer B iron core and fastening support, all iron core teeth tooth width of A iron core is equal, outer circle closed slot is equipped on iron core tooth, all iron core teeth are integrally connected to form annular whole by outer circle closed slot;All iron core teeth tooth width of B iron core is equal, all iron core teeth are integrally connected to form annular whole by inner circle magnetic yoke;The iron core tooth of A iron core and B iron core is staggered and spaced arrangement, and the iron core tooth tooth width of A iron core and B iron core is unequal;A iron core and B iron core are made into double-layer split type unequal tooth width iron core structure by coaxial nesting, and the both ends of fastening support are respectively welded and fixed in A iron core inner wall and B iron core magnetic yoke outer wall.The utility model solves the problem of low slot fill factor, large torque fluctuation, large tooth slot torque and large noise of existing concentrated winding motor;Solve the problems of high single-tooth punching cost, poor reliability and other problems of split type iron core.