49results about How to "Increase the number of teeth" patented technology

A cutting tool comprises a tool body having proximal and distal ends and defining a central axis. The tool body includes a shank portion and a fluted portion. The shank portion may be configured to be rotatably engageable to a milling machine. The fluted portion may include a plurality of teeth disposed about a circumference thereof and being formed at a radius relative to the central axis. In one embodiment, the teeth may be divided into first and second tooth sections with the teeth in the second tooth section being formed at a reduced radius relative to the teeth in the first tooth section.

The invention discloses a harmonic type reducing mechanism. The harmonic type reducing mechanism comprises an inner rigid gear with a tooth number of 2(n+1), an outer flexible gear with the tooth number of 2n, a flexible bearing and a wave generation wheel, wherein the outer flexible gear is arranged in the inner rigid gear in a penetrating manner, and the outer flexible gear has a modulus m which is identical to that of the inner rigid gear; the flexible bearing is arranged in the flexible outer bearing in a penetrating manner; the wave generation wheel is arranged in the flexible bearing in a penetrating manner. By increasing the meshed gear teeth, so that a pitch error of each tooth is reduced by average, the transmission precision is improved, the transmission torque is increased, and the flexible bearing is ensured to rotate smoothly.

An angle-adjustable hinge provided with a first arm having a case portion and a second arm connected to the first arm with the case portion as to oscillate around a first axis and having a gear portion. The angle-adjustable hinge is also provided with a wedge-shaped window portion formed on the case portion of the first arm. Further, the angle-adjustable hinge is also provided with a floating wedge member, disposed as to move within the wedge-shaped window portion, having one face side as a toothed face to engage with the gear portion and another face side as a contact face to contact a wedge face on an outer side of the wedge-shaped window portion. And, the second arm is composed of a plate body, having symmetrical two gear plate portions, bent as the gear plate portions become parallel with a predetermined interval.

The invention relates to an entwined drive-cross system for a national costume decoration belt knitting machine, and belongs to the national costume decoration belt knitting machine. The number of front-transition gear driving plates and rear-transition gear driving plates of the entwined drive-cross system is separate two; front-rotation gear driving plates and rear-rotation gear driving plates are separately meshed with the two front-transition gear drivings and the two rear-transition gear driving plates to form a front transmission system and a rear transmission system, an entwined weavingsystem is formed between the front transmission system and the rear transmission system through common gear driving plates meshed with each other, and adjacent drive-cross slots are aligned synchronously during operation; the rear part of a front guide rail overlaps the front part of a rear guide rail to form a common guide rail; the intersection of the front guide rail and the rear guide rail islocated on one side of the rear guide rail; and the diameter of the front guide rail at the common guide rail is larger than that of the rear guide rail. The entwined drive-cross system for the national costume decoration belt knitting machine has the advantages that the guide rail of the knitting machine has no spindle interference phenomenon, the shape of the machine is reduced, and the space is saved; the reduction of the number of teeth of a drive-cross gear increases the rotation speed of the machine, and the production volume increases with the improvement of the rotation speed of the machine; and a spindle is woven evenly smoothly, and the weaving quality is improved.

The invention discloses a heavy gear transmission vertical broaching machine tool. The heavy gear transmission vertical broaching machine tool comprises a base and a machine tool body, wherein the machine tool body is fixed on the base; a guide rail extending in the vertical direction is arranged on the machine tool body; a main slide carriage driven by a power device and linearly moving in a reciprocating way is arranged within the guide rail; the power device comprises an electric motor and a driving shaft; the driving shaft is connected to an output end of the electric motor; a driving gear is arranged on the driving shaft; a driving rack adaptive to the driving gear is fixed on the main slide carriage; a clamping device for fixing a broaching tool is arranged on the main slide carriage; the heavy gear transmission vertical broaching machine tool also comprises a workbench arranged on the base; and a fixing device for fixing a workpiece is arranged on the workbench. The heavy gear transmission vertical broaching machine tool disclosed by the invention has the advantages of simple transmission mode and convenience for mounting and is very suitable for broaching heavy and large-sized workpieces; the bearing capacity of the broaching machine tool can be effectively enhanced so that the transmission is stable and the error generated in the machining process is largely reduced; and the fault source can be accurately figured out in time after the fault occurs so that the maintenance time is reduced.

A novel wind power gear box belongs to the technical field of mechanical gear boxes and comprises a box body for supporting, and an input end, an intermediate stage and an output end are mounted in the box body and sequentially connected. Therefore, the structure can effectively reduce the return difference problem of the planetary gear train caused by manufacturing and mounting errors, so that the processing and mounting requirements on high-speed components can be properly reduced by utilizing the structure; the reliability of a design object is improved, so that the design object can be suitable for a power generation occasion with MW-level power; by means of the structure, axial force can be counteracted, the axial force on the shaft is reduced, the joint of the shaft can be fixed through the elastic check ring and connected with the gear coupling, meanwhile, the most beneficial floating uniform load mode is achieved, and the adverse effect of unbalance loading on reliability is reduced.

The invention provides a cycloid flexible gear speed reducer, relates to the technical field of mechanical transmission, and aims to optimize the structure of the cycloid flexible gear speed reducer to a certain extent so as to reduce the size and machining difficulty of a whole speed reducing mechanism. The cycloid flexible gear speed reducer comprises a shell, an input assembly, a speed reduction flexible gear and an output assembly. The input assembly, the speed reduction flexible gear and the output assembly are all arranged in the shell. The input assembly comprises an eccentric shaft and a main gear, and an eccentric section of the eccentric shaft is connected with the main gear; the speed reduction flexible gear comprises an outer tooth part and an inner tooth part, the outer tooth part and the inner tooth part are distributed in the circumferential direction of the speed reduction flexible gear, a meshing part is formed in the shell in the circumferential direction of the shell, the inner tooth part is meshed with the main gear, and the outer tooth part is meshed with the meshing part; and the output assembly is connected with the main gear so as to rotate along with the main gear.

The invention provides an electric power-assisted braking system that comprises a power booster outer shell; a power assisting sleeve is arranged in the power booster outer shell; one end of a brake pedal push rod penetrates into one end of the power booster outer shell and is hinged to one end of a booster push rod. The booster push rod is installed at one end of the power assisting sleeve and can move in the power assisting sleeve; a motion conversion mechanism is mounted outside the booster push rod, is connected with a motor and used for realizing conversion from rotation to translation ofthe motor. According to the electric power-assisted braking system, conversion from rotation to translation of the motor is achieved through a gear reduction mechanism, and then a transmission targetis achieved through a hollow ball screw mechanism. By reducing the number of teeth of a pinion and increasing the number of teeth of a bull gear, the meshing frequency of the gears is reduced, meanwhile, the linear speed of the ball screw is reduced, and the NVH performance is improved.

A mechanical transmission device is capable of enhancing the cutting property of a ball-end milling cutter, and comprises a driving shaft, an intermediate shaft, a plurality of gears (cylindrical gear, internal gear, bevel gear, spiral gear), a driven shaft and a milling cutter; the driving shaft and the driven shaft form an included angle; when a main shaft is driven to rotate by a power source, the main shaft drives the driven shaft to rotate around the main shaft by the gears and rotates around the axis. The centre of the ball-end is corrected by a scale or by other methods, so as to be arranged on the centre line of the main shaft. The method is simple and convenient. Therefore, the centre part of the ball-end milling cutter does not participate in cutting due to the fact that the centre part is likely to tip and wear. The part of the end face of the ball-end milling cutter which does not participate in cutting is increased along with the increment of included angle between the driving shaft and the driven shaft. The centre of the ball-end milling cutter is avoided from tipping, thereby enhancing the wearing resistance of the cutter, fastening the cutter feeding speed, and improving the cutting efficiency.

The invention relates to an electronic device which comprises a first casing, a second casing, a plurality of assembly pieces and a plurality of locking pieces, wherein the first casing is provided with at least one first combining part; the second casing is provided with at least one second combining part; each assembly piece is provided with a plurality of assembly parts and a locking part, wherein the assembly parts are combined with the second casing for fixing the assembly pieces on the second casing; and when being used for assembling the first casing and the second casing, the locking pieces penetrate through the first combining part and the second combining part correspondingly superposed and are locked in the locking parts.

The invention discloses a ratchet wheel clamp. The ratchet wheel clamp comprises that a first clamping arm and a second clamping arm are mutually pivoted to be opened or closed relative to each otherthrough a connecting shaft, and a ratchet component, a swinging component and a control component are arranged between the first clamping arm and the second clamping arm; the ratchet component is provided with a plurality of first ratchets and a plurality of second ratchets which are arranged side by side and are staggered with one another; the swinging component and the ratchet component are relatively far away from or close to each other by taking the connecting shaft as a rotating axis; a clamping part of the control component is provided with at least a first pawl and at least a second pawl, a pulling part of the control component is used for shifting the clamping part to move; when the clamping part moves to a meshing position, the first pawl and the second pawl are correspondingly meshed with the corresponding the first ratchets and the second ratchets; and when the clamping part moves to a release position, the first pawl and the second pawl are correspondingly far away from thecorresponding first ratchets and the second ratchets. Through the design of ratchets which is arranged in a staggered mode, the ratchet shape cannot be reduced, so that the structural strength is increased, and the overall clamping force is greatly enhanced.

The invention relates to the technical field of heat pipes, in particular to a small-outer-diameter grooved copper pipe and a production method thereof. The small-outer-diameter grooved copper pipe comprises a copper pipe body, the inner wall of the copper pipe body is provided with a plurality of grooves in the circumferential direction, and the grooves are spirally formed in the length direction of the copper pipe body. According to the small-outer-diameter grooved copper pipe and the production method thereof, a high-speed liquid-filled spinning method and a multi-tooth core head are adopted to make metal on the inner wall of a copper pipe base pipe subjected to continuous plastic forming to form the micro grooves. Under the pressure action of the multi-tooth core head and a spinning ball, the metal on the inner wall surface is subjected to plastic deformation after complex plastic flow, so that the final inner wall surface micro grooves are formed. By optimizing the tooth profile design of the drawing core head, the bottom width of grooved pipe internal teeth is reduced, the number of the groove internal teeth is increased, and therefore the small-outer-diameter multi-groove copper pipe for heat pipes is obtained.

The invention discloses a pedal type screening device. The device comprises a base, a sieve, an arm-rest frame, a ratchet wheel, two pedals and a seat. The arm-rest frame is arranged in the middle ofthe base. A supporting hanging rod is arranged at the front end of the base. Guide grooves are formed in the arm-rest frame and the supporting hanging rod correspondingly. A sieve bracket is hung on the supporting hanging rod. The sieve is arranged on the sieve bracket. A guide rod is arranged at the front end of the sieve bracket, and a push rod is arranged at the rear end of the sieve bracket. The front portion of the guide rod is located in the guide groove formed in the supporting hanging rod, the push rod is located in the guide groove formed in the arm-rest frame, and the rear segment ofthe push rod is in sliding connection with the ratchet wheel. A seat frame is arranged at the rear end of the base. The seat is mounted on the seat frame. Two ratchet wheel seats are arranged on theportion, behind the arm-rest frame, of the base. An axletree is mounted on the upper portions of the two ratchet wheel seats. The two pedals are mounted at the two ends of the axletree in a 180-degreeintersecting mode, and the ratchet wheel is fixed to the middle of the axletree and located between the two ratchet wheel seats. The pedal type screening device adopts a riding mode to replace pure manual oscillating and can be used for both laboratory soil sample screening and peasant household grain screening, the labor intensity is relieved, and the working efficiency is improved.