7results about How to "Effective transmission torque" patented technology

The invention relates to the technical field of machining equipment, and discloses a positioning block for preventing a drill bit from rotating, the drill bit and a machining method.The positioning block comprises a head-changing drill bit module, and a boss structure is arranged at the top of the head-changing drill bit module; the boss structure is a hexahedron structure and comprises a bottom surface, a top surface, two side surfaces and two end surfaces; wherein the bottom surface of the boss structure is arranged at the top of the head-changing drill bit module; the top face is of a plane structure, the two side faces are first stress faces, and the two end faces are second stress faces. The first stress surfaces are a pair of planes which are centrosymmetric to each other, and the second stress surfaces are a pair of involute curved surfaces which are centrosymmetric to each other. Relative rotation between the cutter body and the head-changing drill bit module is effectively prevented in the cutting process, blockage is avoided, and therefore the situation that chip removal is affected is avoided, and the stability of the machining quality is guaranteed.

The utility model relates to a kind of oral comprehensive treatment table suction saliva pipeline cleaning brush, including the cleaning part for cleaning inside suction saliva pipe and the hand-held part connected in the cleaning part proximal end, the cleaning part includes inner tube, hollow rotating rod and cleaning cover, it is characterized in that, in the case where the inner tube is connected with hand-held part, the liquid bag of inner tube distal end is filled with liquid to make it swell and abut on suction saliva inner wall, so as to fix inner tube in the predetermined position, and by cutting off suction saliva pipe to form a space allowing cleaning agent injection in the proximal end side of liquid bag;In the case where the hollow rotating rod is connected with hand-held part, the hollow rotating rod is axially rotated under the drive of hand-held part, driving cleaning cover that is sleeved on the outer wall of hollow rotating rod synchronous rotation, so that cleaning cover brush removes dirt softened by cleaning agent on suction saliva inner wall.The cleaning brush of the utility model utilizes two steps of soaking and removing, and improves the removal effect of dirt on suction saliva inner wall.

The present invention discloses a coupling and a power transmission device, which relate to the field of mechanical transmission and are used to optimize the structure and performance of the coupling. The coupling includes a first sleeve, a second sleeve and a rope. The first sleeve has a first mounting hole and a plurality of recessed parts, the central axis of the first mounting hole is along the central axis of the first sleeve, and the plurality of recessed parts surround the first mounting hole. The second sleeve is installed in the first mounting hole, and a groove is provided at the first end of the second sleeve. The two ends of the rope are located in the recessed part, and the middle of the rope is stuck in the groove to transmit torque between the first sleeve and the second sleeve. In the coupling provided by the above technical solution, there is no radial limiting structure between the first sleeve and the second sleeve, which greatly reduces the requirements for the coaxiality of the first connecting shaft and the second connecting shaft, so that the first connecting shaft and the second connecting shaft can still effectively transmit torque even if there is a large coaxiality deviation.

This utility model belongs to the technical field of gas generators, and specifically relates to a support structure for gas generators. The support structure for gas generators includes a mounting base, characterized in that: a front support flexible plate is fixed to the front end of the mounting base, a front casing is fixed to the top of the front support flexible plate, a main support flexible plate is fixed to the rear end of the mounting base, a main support column is fixed to the top of the main support flexible plate, a column support pin is installed on the main support column, the column support pin is connected to a tie rod ring, a tie rod is connected between the tie rod ring and the front casing, and the tie rod ring is connected to a load-bearing ring through a tie rod ring support pin. The beneficial effects of this utility model are: this support structure for gas generators, while ensuring effective support and fixation, can guarantee expansion in all directions without generating thermal stress. It can effectively transmit axial force and torque between the stator and rotor. Furthermore, it facilitates adjustment of the angle, gap, and preload during installation.

The utility model discloses a grain scattering disc of batch type circulating grain drying equipment, which comprises a grain scattering part, the grain scattering part is arranged in a rectangular grain scattering space, the grain scattering part comprises a round disc body, and the outer edge of the round disc body is provided with a retaining wall to form a grain receiving space to receive grains falling from the top. Four openings allowing grain to flow out are evenly formed in the retaining wall in the circumferential direction, a rotating rod is connected to the center of the circular disc body so that the circular disc body can rotate along with the rotating rod, and a driving part for driving the rotating rod to rotate is connected to the top end of the rotating rod; four guide plates are connected to the outer surface of the rotating rod, the edge parts of the guide plates penetrate through the openings, the two adjacent guide plates have a length difference, and the lengths of the two oppositely arranged guide plates are the same. According to the grain scattering device, grains are induced to form an elliptical grain scattering path which is more fit with a rectangular grain scattering space, so that the scattered grains can be relatively flatly stacked, and the utilization rate of the grain scattering space and the grain distribution uniformity are improved.

The automobile assembly type steering knuckle comprises a main knuckle rod and an auxiliary knuckle rod, a plurality of sets of tooth columns which are annularly arranged are arranged on the surface of the auxiliary knuckle rod, a tooth inserting groove is formed between every two adjacent tooth columns, a cavity is formed in the main knuckle rod, an extension pipe is installed on the outer side of the cavity, and the surface of the extension pipe is sleeved with a rotary knob ring in a threaded mode. A plurality of groups of tooth columns are also arranged on the inner wall of the cavity of the main section rod in an annular array; and part of the tooth columns are inserted among the tooth inserting grooves. Fixing seats are mounted at the ends of the main section rod and the auxiliary section rod, and metal reinforcing layers are arranged at the end areas of the fixing seats; a rotating block is arranged in the fixing base, second connecting rods on the two sides of the rotating block are rotationally installed in first clamping holes of the fixing base, and first connecting rods on the surface of the rotating block are inserted into second clamping holes of the installation lugs. A mounting seat with a cutting groove and a mounting hole is mounted on one side of the mounting lug, anti-skid patterns are arranged in the mounting hole, and a locking bolt is arranged outside the mounting seat. An assembled structure is adopted, installation and maintenance are convenient, and the connection stability is improved through cooperation of the tooth columns and the tooth inserting grooves.

The application relates to the technical field of machine tooling equipment, and discloses a positioning block for preventing rotation of a drill bit, the drill bit and a machining method. The positioning block comprises a head-changing drill bit module, and a boss structure is arranged at the top of the head-changing drill bit module; the boss structure is a hexahedral structure comprising a bottom surface, a top surface, two side surfaces and two end surfaces; the bottom surface of the boss structure is arranged at the top of the head-changing drill bit module; the top surface is a planar structure, the two side surfaces are first stress surfaces, and the two end surfaces are second stress surfaces; the first stress surfaces are a pair of planar surfaces which are centrosymmetric to each other, and the second stress surfaces are a pair of involute curved surfaces which are centrosymmetric to each other. The application effectively prevents relative rotation between a cutter body and the head-changing drill bit module during cutting, avoids causing blockage and affecting chip removal, and thus guarantees the stability of machining quality.